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The Geometries and Purposes of a Slitting Saw

When a machinist needs to cut material significantly deeper than wide, a Slitting Saw is an ideal choice to get the job done. A Slitting Saw is unique due to its composition and rigidity, which allows it to hold up in a variety of both straightforward and tricky to machine materials.

What is a Slitting Saw?

A Slitting Saw is a flat (with or without a dish), circular-shaped saw that has a hole in the middle and teeth on the outer diameter. Used in conjunction with an arbor, a Slitting Saw is intended for machining purposes that require a large amount of material to be removed within a small diameter, such as slotting or cutoff applications.

Other names for Slitting Saws include (but are not limited to) Slitting Cutters, Slotting Cutters, Jewelers Saws, and Slitting Knives. Both Jewelers Saws and Slitting Knives are particular types of Slitting Saws. Jewelers Saws have a high tooth count enabling them to cut tiny, precise features, and Slitting Knives are Slitting Saws with no teeth at all. On Jewelers Saws, the tooth counts are generally much higher than other types of saws in order to make the cuts as accurate as possible.

Key Terminology

Why Use a Slitting Saw?

These saws are designed for cutting into both ferrous and non-ferrous materials, and by utilizing their unique shape and geometries, they can cut thin slot type features on parts more efficiently than any other machining tool.

Common Applications:

  1. Separating Two Pieces of Material
    1. If an application calls for cutting a piece of material, such as a rod, in half, then a slitting saw will work well to cut the pieces apart while increasing efficiency.
  2. Undercutting Applications
    1. Saws can perform undercutting applications if mounted correctly, which can eliminate the need to remount the workpiece completely.
  3. Slotting into Material
    1. Capable of creating thin slots with a significant depth of cut, Slitting Saws can be just the right tool for the job!

When Not to Use a Slitting Saw

While it may look similar to a stainless steel circular saw blade from a hardware store, a Slitting Saw should never be used with construction tools such as a table or circular saw.  Brittle saw blades such as slitting saws will shatter when used on manual machines, and can cause injury when not used on the proper set up.

In Conclusion

Slitting Saws can be beneficial to a wide variety of machining processes, and it is vital to understand their geometries and purpose before attempting to utilize them in the shop. They are a great tool to have in the shop and can assist with getting jobs done as quickly and efficiently as possible.

How to Advance Your Machining Career: 8 Tips from Machining Pros

Since we began shining a light on Harvey Performance Company brand customers via “In the Loupe’s,” Featured Customer posts, more than 20 machinists have been asked to share insight relevant to how they’ve achieved success. Each Featured Customer post includes interesting and useful information on a variety of machining-related subjects, including prototyping ideas, expanding a business, getting into machining, advantages and disadvantages of utilizing different milling machine types, and more. This post compiles 8 useful tips from our Featured Customers on ways to advance your machining career.

Tip 1: Be Persistent – Getting Your Foot in the Door is Half the Battle

With machining technology advancing at the amazing rate that it is, there is no better time to become a machinist. It is a trade that is constantly improving, and offers so many opportunities for young people. Eddie Casanueva of Nueva Precision first got into machining when he was in college, taking a job at an on-campus research center for manufacturing systems to support himself.

“The research center had all the workings of a machine shop,” Eddie said. “There were CNC mills, lathes, injection molding machines, and more. It just looked awesome. I managed to get hired for a job at minimum wage sweeping the shop floor and helping out where I could.

As a curious student, I would ask a million questions… John – an expert machinist – took me under his wing and taught me lots of stuff about machining. I started buying tools and building out my toolbox with him for a while, absorbing everything that I could.”

One of the best things about becoming a machinist is that there is a fairly low entry barrier. Many machinists start working right out of high school, with 12-18 months of on-the-job training or a one to two year apprenticeship. Nearly 70% of the machinist workforce is over the age of 45. The Bureau of Labor Statistics is predicting a 10% increase in the machinist workforce with opportunities for 29,000 additional skilled machinists by 2024, so it is certainly a great time to get your foot in the door.

Tip 2: Keep an Open Mind – If You Can Think of It, You Can Machine It

Being open-minded is crucial to becoming the best machinist you can be. By keeping an open mind, Oklahoma City-based company Okluma’s owner Jeff Sapp has quickly earned a reputation for his product as one of the best built and most reliable flashlights on the market today. Jeff’s idea for Okluma came to him while riding his motorcycle across the country.

“I had purchased what I thought was a nice flashlight for $50 to carry with me on the trip. However, two days in to the trip the flashlight broke. Of course, it was dark and I was in the middle of nowhere trying to work on my bike. I’m happy to pay for good tools, but that wasn’t what happened. Not only was there no warranty for replacement, there was no way to fix it. It was just made to be thrown away. That whole attitude makes me angry. When I got home, I decided I was going to put my new skills to work and design and build my own flashlight, with the goal of never running into an issue like I had on my trip ever again. I started by making one for myself, then four, then twenty. That was four years ago. Now I have my own business with one employee and two dogs, and we stay very busy.”

An awesome side benefit to working as a machinist is that you have all the resources to create anything you can dream of, like Jeff did with Okluma.

Image courtesy of Okluma.

Tip 3: Be Patient – Take Time to Ensure Your Job is Setup Correctly before Beginning

The setup process is a huge part of machining, but is often overlooked. Alex Madsen, co- owner of M5 Micro in Minnesota, has been working in manufacturing for more than 11 years. Alex is also a part owner of World Fabrication, and owns his own job shop called Madsen Machine and Design. Alex has spent countless hours perfecting his setup to improve his part times.

“It is certainly challenging to use little tools, but the key is to not get discouraged. You should plan on lots of trial and error; breaking tools is just a part of the game. You may buy ten end mills and break six, but once you dial one in it will last the rest of the job.

You should also make sure to put extra time and effort into understanding your machine when working on micromachining jobs. You need to know where there is any backlash or issues with the machine because with a tiny tool, even an extra .0003” cut can mean the end of your tool. When a difference of one tenth can make or break your job, you need to take your time and be extra careful with your machine, tool inspection, and programming before you hit run.”

Tip 4: Effort Pays Off – Long Hours Result in Shop Growth

Success isn’t earned overnight. That is especially true in the machining world. Becoming a good machinist takes a great deal of sacrifice, says Josh from Fleet Machine Co. in Gloucester, MA.

“Opening your own shop involves more than learning how to program and machine. You also need to be willing to sacrifice some of your free time by working long hours to build your business from the ground up. Being a great machinist is important, but you also need to understand the basics of business, and you need to be able to sell your service and maintain a certain level of quality to keep your customers coming back.”

Working hard is a common theme we hear from our featured customers. Brothers Geordan and Nace Roberts of Master Machine Manufacturing have similar advice.

“We often need to work odd hours of the day to maintain the business, but we do it in a way that makes sure we have our family time. There are many times where we will go home, have dinner and hang out with the family, and wait until they are all sleeping to go back to work until two or three a.m. We will get back home later that morning to sleep a little and have breakfast with the family and send them on their way before heading back into the shop.” Starting and growing a business takes time. Every machinist starts from the beginning and through hard work and determination, grows their business.

Image courtesy of Liberty Machine Inc.

Tip 5: Utilize Tooling from Quality Manufacturers – All Tooling Isn’t Created Equal

 

When it comes down to it, tooling is singlehandedly the biggest choice you will make as a machinist. Grant Hughson, manufacturing engineer at Weiss Watch Company who works as a manufacturing instructor in his spare time, reflected on the importance of tooling.

“Tool to tool accuracy and performance is vital in this business, especially with our extremely tight tolerances. High quality tools make sure that we get the same performance time after time without needing to scrap parts. This saves us valuable time and money.”

While opting for cheaper tooling can appear to be beneficial when just starting out, before long, machinists are losing time and money because of unpredictability. Jonathan from TL Technologies echoed this point, saying:

“We feel that if we invested so much in these high-end machining centers, it would be criminal to put insufficient tooling and holders into them. We found that by selecting the proper tool with the appropriate sciences behind it we have been able to create products with a cost per cut that is not only competitive, but required to stay current. By keeping the quality as high as possible on the part making side of things, we’ve insured as much ease and reliability into our downstream process as we could. Quality tooling also provides predictability and added safety into the workflow. High-quality carbide tooling is the lifeblood of the business.”

Additional Thoughts Regarding Boosting Your Machining Career With Tooling:

Don’t Cheap Out

  • “The additional cost is always worth the payoff in the end knowing that you have a tool that will produce quality parts and shave valuable minutes off your cycle times. The slightly higher cost of the Harvey/Helical product is small change compared to the long term cost savings associated with their performance” – Seth, Liberty Machine

Consistency is Key

  • “We know the performance we are going to get from the tools is consistent, and we can always rely on getting immaculate finishes. While using the Harvey Tool and Helical product, we can confidently walk away from the machine and come back to a quality finished part every time.” – Bennett, RIT Baja SAE

Superior Specialty Tools

  • “One of the greatest things that I’ve experienced over the past year and a half is flexibility. We’ve asked for some specific tools to be made typically, the lead times that we found were beyond what we needed. We went through the Helical specials division and had them built within a couple of weeks. That was a game changer for us.” – Tom, John Force Racing

“Having high quality tooling like Helical is essential. Helical tools help us maintain a much higher machining efficiency because of the outstanding tool life, while also achieving more aggressive run times. In addition, we are able to consistently keep high tolerances, resulting in a better final product.” – Cameron, Koenig Knives

Tip 6: Get With the Times – Join the Social Media Community

Social media is a valuable tool for machinists. With ever-increasing popularity in networks such as Facebook, LinkedIn, Twitter, and Instagram, there will always be an audience to showcase new and unique products to. We asked a few of our featured customers how they incorporated social media into their machining and the benefits that come along with it.

“A lot of our sales come through Instagram or Facebook, so I would recommend those platforms to anyone who is trying to start a business,” Jeff from Okluma said. “We have also had a lot of success collaborating with others in the community. Typically it is something we couldn’t do ourselves, or they couldn’t do themselves, so we share the labor and collaborate on some really cool items.”

Tip 7: Value Your Customers – Always Put Them First

“In the Loupe’s” featured customers repeatedly emphasized the importance of putting customers first. It’s a simple concept to master, and pays off immensely. Repeat customers tell you that you are doing something right, said Brian Ross, owner of Form Factory.

“We have kept our customers happy and consistently deliver parts on time, so we get a lot of repeat business. Word definitely gets around on how you treat people so we try to treat everyone with respect and honesty which is key to running a good business.” Jeff from Okluma takes great pride in his customer service, saying “we only sell direct to consumers through our website so we can control our lifetime warranty. It has worked really well for us so far, so we have no plans to change that right now. I care more about our customers than any retailer is able to.”

Image courtesy of MedTorque.

Tip 8: Never Stop Learning – Ask Questions Whenever You Can

Hopefully some of these tips from our featured customers stuck with you. To leave you with a quote from of Seth Madore, owner of Liberty Machine, “Don’t stop learning. Keep your ears open and your mouth shut,” “That old guy in the shop has likely forgotten more than you will ever learn. The amount of tools in your Kennedy box doesn’t mean you’re a good machinist. Some of the best toolmakers I knew had small boxes with only the common tools. Learn how to excel with limited resources. Ask questions, and own up to your mistakes.”

John Force Racing – Featured Customer

John Force Racing has been dominating the motorsports world for over 30 years, winning 20 championships and hundreds of races in the National Hot Rod Association (NHRA) drag racing series. John Force Racing features both Funny Car and Top Fuel teams, and just recently in 2017 they won both the Funny Car and Top Fuel championships in the same season.

John Force Racing invested in Force American Made to develop and create parts and components that would help drive all the teams to success and safety. The 84,000 square foot shop is located in Brownsburg, Indiana (just outside of Indianapolis) and is the heartbeat of John Force Racing. Thousands of parts are forged by Force American Made and its team of employees every season giving the team a competitive edge that has led to the team’s on-track success.

The Force American Made team has relied on Helical Solutions tooling to get the best performance and quality out of their CNC mills for years. The Harvey Performance Company team was invited out to Indiana to take a tour of Force American Made and spend some time with Tom Warga, Lead Machinist, to talk with him about his experiences with Helical Solutions tooling, his first time trying Machining Advisor Pro, the success they have had using the new Helical tool libraries for Mastercam, and the value their distributor, Dolen Tool, brings to the shop. Check out the video interview below to see the inner-workings of Force American Made and how Helical Solutions tooling has contributed to the success of this motorsports dynasty.

Okluma – Featured Customer

Okluma is a small manufacturing business located in Oklahoma City focused primarily on creating high-quality flashlights that can stand up to the most extreme conditions. The company was founded in early 2015 out of owner Jeff Sapp’s garage, and has quickly gained a solid reputation as one of the best-built and most reliable flashlights on the market today.

We were able to steal a few moments of Jeff’s time to interview him for this Featured Customer post, where he shared his thoughts on topics like the importance of customer service, the reason to use higher quality tooling, and his transition into the world of CNC machining.

To get started, how did you first get involved in manufacturing?

In high school I actually worked in a machine shop. This is where I got my first exposure to big machines and manufacturing. I worked at the shop until I graduated, doing simple things like sweeping the floor and running errands. The work wasn’t very exciting, but it did give me some really good exposure to the world of machining. Every now and then one of the machinists would let me help out with a part, but that would be rare. I did manage to save up enough money to buy a small mill and lathe, which I took with me when I went off to college.

During college and after graduation, I made a living by writing software, which I did successfully for 15 years. Eventually I got tired of writing software after I had spent more than a decade in that space, and I wanted to try something new. I had picked up small jobs and worked on personal projects over the years, so I decided to enroll in a machine shop school in Oklahoma City to learn more about manufacturing and becoming a machinist, and graduated from there with a renewed sense of what I wanted to do. Technical schools are a great way to pick up new skills and advance your career. The manufacturing technology program at the Francis Tuttle Technology Center here in Oklahoma City was great and the instructors there, Dean and Julia, are talented and very patient people.

okluma

Did your background in writing software help you transition into CNC programming?

Absolutely. It was a tremendous help to understand some very strange programming concepts that came with writing software, and it all translated very well into CNC programming. These days, CNC machinists and programmers need to be as knowledgeable about the software and programs as they do the tools and parts, so having a background in software programming or development certainly translates well to the world of CNC machines.

Where did the idea to start Okluma stem from?

After graduation from the machine shop program, I took a few weeks off and went on a long, off-road motorcycle trip across the country. I had purchased what I thought was a nice flashlight for $50 to carry with me on the trip. However, two days in to the trip the flashlight broke. Of course, it was dark and I was in the middle of nowhere trying to work on my bike. I’m happy to pay for good tools, but that wasn’t what happened. Not only there was no warranty for replacement, there was no way to fix it. It was just made to be thrown away. That whole attitude makes me angry.

When I got home, I decided I was going to put my new skills to work and design and build my own flashlight, with the goal of never running into an issue like I had on my trip ever again. I started by making one for myself, then 4, then 20. That was 4 years ago. Now I have my own business with one employee and two dogs, and we stay very busy.

okluma

What does your current product offering look like?

For our products, I currently have two flashlights models (the DC1 and DC2) and we are working on some cool new projects for 2019. With battery and LED technology advancing like it has, there are some interesting applications, way beyond just flashlights, that haven’t been possible until recently. Stay tuned for more information on those by following us on Instagram.

What do you think separates an Okluma flashlight from the competition?

The basic values behind Okluma all stem from me simply wanting a nice tool that won’t break easily and will be supported by the manufacturer. I offer a lifetime warranty and stand firmly behind that. I want an Okluma flashlight to last forever so you will never have to buy another flashlight.

The quality and hardiness of a flashlight is important to many outdoors types, homeowners, and collectors, but we also sell lots of our flashlights to the military and police. If their light goes out in a tough situation it could be really bad, so we have to make sure our flashlights can be dependable above all else. Like they always say, you get what you pay for. Our flashlights aren’t going to be the cheapest, but we stand behind them with our warranty and pride ourselves on the quality and reliability.

okluma

What sort of machines and software do you have in the shop?

Right now I have the old standards like a Bridgeport mill and an old LeBlond lathe, as well as my CNC machines – a Daewoo Lynx 220LC CNC Lathe and a Doosan DNM 4500 CNC Mill.

For software, I use Autodesk Fusion 360 for the mill, and I write the G-code by hand for the lathe. I was more familiar with the lathe, so I had an easier time writing my own code for it. Getting Fusion 360 for my milling has been a huge help.

Have you been using the Harvey Tool and Helical Solutions tool libraries in Fusion 360?

Yes! The tool library in Fusion 360 was a huge help for me. To be able to get the right tool and not model things incorrectly probably saved me a lot of broken tools. That was a big reason why I came to Harvey Tool and Helical for support in the first place.

It was cool to come from the software community, where we collaborated on a lot of open-source projects, and see companies like Autodesk opening up their software to manufacturers like Harvey Tool and Helical for these great partnerships.

What sort of operations/parts do you create on the lathe versus the mills?

As you can imagine (being a cylindrical shaped part) most of the flashlight manufacturing is done on the lathe. For a while I had been making them all by hand, until we got the CNC lathe. While most of the work is done on the lathe, for the more intense pieces we have to drill and tap and do some different slotting operations. We also drill and tap the clip holes for all of the flashlights, so the CNC mill is huge for those operations.

As Okluma started to grow, we realized that we had a huge bottleneck doing our secondary operations by hand on the manual milling machine. We solved that problem by buying the Doosan mill to help with secondary operations, but you still have to know how to use it to make it worth the purchase!

I was completely in the dark on the CNC milling side of things at that time, as I was much more familiar with the lathe. I actually called Harvey Tool with a few questions, and the Harvey Tech team really held my hand and walked me through all of the things I needed to know, which was huge. I also used the Machining Advisor Pro application to generate speeds and feeds for my Helical end mills. MAP helped save me a lot of broken end mills and increased my production times.

okluma

You are using almost exclusively Harvey Tool and Helical for milling operations on your Doosan VMC. Why is purchasing quality tooling important to you?

I can try to do things on my own and eventually get it, but it costs me money on broken tools and it costs me my time, which is even more valuable. I could go that route with any number of different tooling manufacturers, but the fact that I can call Harvey or Helical and get an answer to my questions the first time, usually in a few minutes, and know it will work is hugely helpful. I don’t really look at the cost of the tools so much, because I just know they work and I know I will get the support I need to make my milling operations a success.

Can you remember a crucial moment when Harvey Tool or Helical technical support helped you to be more productive?

As we try to get more creative with our designs, we plan to rely heavily on Harvey and Helical to explore some of these new applications. We actually build our own tool to work on the flashlights, and we are using Harvey and Helical exclusively to machine that. At first, I was making the tools in two operations; I was doing a radius on top and then flipping the part over to create a radius on the bottom. I was having a hard time lining it up. We moved the second radius on the first operation, and used an undercutting tool and everything matched up perfect. I wasn’t really sure how to do it, but I called you guys and you figured it out with me! We have some cool projects coming up which we are planning to rely on Helical tools for, but people will have to stay tuned for that one!

okluma

What have been some of your keys to success for your growing sales?

Good customer service is key. We are one of the few companies that will offer a lifetime warranty. I know there are a lot of flashlight collectors, and we can make fun stuff for those guys, but I want people to really use our flashlights and scratch them and do ridiculous things with them. We have had people use a flashlights in crazy ways (like as a hammer) but we will still fix them under our lifetime warranty. I don’t really care what people do to our flashlights, I just want them to always work.

We can also overnight replacement flashlights for professionals who rely on them for work, so they never have to be without one. That is huge for our customers in the military or in law enforcement who rely on our flashlights as an essential tool in their day-to-day lives.

Do you have plans to expand into retailers, either online or brick and mortar stores?

We only sell direct to consumers right now through our website so that we can control our lifetime warranty. It has worked really well for us so far, so we have no plans to change that right now. I care more about our customers than any retailer is able to.

I’ve noticed that you have gathered a rather large social media following. How has social media helped shape your business?

A lot of our sales come through Instagram or Facebook, so I would recommend those platforms to anyone who is trying to start a business. We have also had a lot of success collaborating with others in the EDC (Every Day Carry) community where makers are creating knives, wallets, keychains; anything you would carry on you “every day”, hence the name. We have collaborated to make flashlights out of other people’s materials, let other shops refinish our flashlights, and things of that nature. Typically it is something we couldn’t do ourselves, or they couldn’t do themselves, so we share the labor and collaborate on some really cool items.

I think social media is especially great for manufacturing because a lot of younger people don’t even know all this crazy cool stuff that is going on in the industry. I was lucky enough to see it first hand at a young age, but so many others never get the chance. It is awesome to share our work and try to inspire some of the younger generation to make their own products and participate in the world of manufacturing.

okluma


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Nueva Precision – Featured Customer

When it comes to CNC manufacturing services and product development solutions in the Denver, Colorado area, Eddie Casanueva has quickly made a name for himself with his company, Nueva Precision. Eddie has more than 22 years of manufacturing experience and 19 years of business experience, which he uses to help small businesses and entrepreneurs who are looking for product support and development.

Eddie was able to take time out of his busy schedule to talk with us for this Featured Customer post. We covered topics like Eddie’s incredible training and introduction to manufacturing, his experiences using reduced neck end mills, and his suggestions for must-have equipment in any CNC machine shop.

Thanks for taking the time to talk to us for this Featured Customer post. To get started, tell us a little bit about the history behind Nueva Precision and what sort of products you typically manufacture.

Nueva Precision was first incorporated at the end of 2016. Within three months, I was making chips on my own, largely doing prototype work.

I had recently sold my share in another company I co-founded and used that money to move into a larger home in the Denver area that could accommodate a machine shop business. We were lucky enough to find a home with some acreage and an existing oversized garage which was perfect for a shop. Now that I had the building, I had to do things like get the electrical and HVAC up to spec. It required having the city run a stronger electrical line to the building I would use as my shop, but once that was all figured out, we were ready to make some chips.

Nueva Precision

I started by buying a used Haas mill and a used Haas lathe. People initially reached out to me for work because of my quick delivery times. I was able to turn around parts in just a week or two since the business was new. However, within a month of operating those machines, I was already at max capacity with my current equipment. Unfortunately, my lead times had increased to a more standard 4-6 weeks due to the sheer amount of work I was getting. For the rest of 2017, I stuck with my original equipment and just did the best I could to keep up.

nueva precision

Do you have any future plans to expand your shop and capabilities further?

I do! In early 2018 I brought in a brand new VM3 Haas Mill to keep up with demand, but I was curious about how much more revenue that would create. I expected to see a 20-30% increase in revenue, but having another machine ended up doubling my revenue. Luckily my strong relationships with my customers helped me grow the business even as my lead times increased. With that in mind, I just ordered another Haas VM2 at the end of 2018 and am excited to take full advantage of that.

How has your family reacted to you running a business out of your home?

My family has been extremely supportive throughout the whole process. My wife Leandra in particular helps out a lot. She was a teacher for 19 years, but resigned from that profession to work on Nueva Precision. She has started to help out on the business side of things and has also started to help run machines and make parts. My oldest son Jaden (16) is interested in manufacturing and he has started working and making simple parts for us when he is available. All in all, we have a pretty good thing going here.

Eddie and Leandra Nueva Precision

Eddie and Leandra

Jaden nueva precision

Jaden working on parts

How did you first get involved in CNC machining and advanced manufacturing?

I am essentially self-taught in CNC machining. I got started in engineering and manufacturing as a student at the New Jersey Institute of Technology (NJIT) in the Mechanical Engineering program. It was a state school, so tuition costs weren’t bad but I still needed to support myself. I was going to school during the day and pumping gas at night to pay the bills. In my second year in school I came across an opportunity to work at an on-campus research center for manufacturing systems. It was funded by the state of New Jersey to help promote New Jersey industry. The job didn’t have much to do with my curriculum, but they supported some campus research and worked closely with the college on various projects.

The research center had all the workings of a machine shop. There were CNC mills, lathes, injection molding machines, and more. It just looked awesome. I managed to get hired for a job at minimum wage sweeping the shop floor and helping out where I could.

As a curious student, I would ask a million questions of all the machinists and try to do more and more than the usual student employee. John – a talented toolmaker and experienced machinist – took me under his wing and taught me lots of stuff about machining. I started buying tools and building out my toolbox with him for a while, absorbing everything that I could. Next thing I know, they’re handing me prints and I am making parts. A few months down the road the machinists started teaching me programming on a Mazak controller. This went on for a year or so and I just soaked it all in.

nueva precision

Sounds like great experience! Where did you land your first full-time position in manufacturing?

I actually landed my first full-time job at the same manufacturing research center. The center had a CNC machinist programmer resign at the facility, so there was a job opening posted. I went to the director of the center and said I was interested in the position. I knew I had to work a lot to pay my tuition, and if I worked for the university I could get my tuition paid for while also making some real money. The director recommended me for the position, so I interviewed and landed the job. All of a sudden, I had benefits, vacation, real responsibilities, and full-time pay. I flipped my schedule around so I could go to school during nights and work during the day.

I learned so much about machining in my first job because of the unique situation I was in. Companies like Blaser Swisslube, Kennametal, and GibbsCAM were supplying us with product and support to work on process improvements for large New Jersey corporations like BF Goodrich Aerospace, US Can, etc. It progressed to the point where GibbsCAM was actually sending me to seminars to train me on different industry topics to further my education and improve the reports we were outputting.

nueva precision

I was in an amazing position to get all this training and I learned so much in the next 4-5 years. We had equipment like a Fadal 5-Axis CNC Machine and other high tech machines at my disposal, which were very hard to find at the time (mid-1990s). Nobody outside of the most elite machine shops were working in 5-axis, so I had a head start because of this unique job experience.

I actually never finished my degree and instead dove head first into manufacturing. I started my own business on the side and kept working at the research center until 2001 when I left to focus full-time on my new business, Spidertrax Offroad.

Can you tell us more about your experience with Spidertrax Offroad?

Spidertrax Offroad is a manufacturer of drivetrain parts for off-roading vehicles. I started Spidertrax with a partner whom I met in college. The company actually started making our first parts at the research center I was employed at. I asked my boss if I could start making parts off the clock on my own time, and he agreed to let me use the shop. This would have been around 1998, and by 2001 I was ready to take off on my own. My partner and I built that company up to 20 employees, and we were (and they still are) a well-respected brand in the off-roading community.

The hardest part about operating my own business and watching it grow was losing the ability to get out in the shop and actually do what I love, which is making parts. As the business grew, I had to take on more responsibility as a “business man,” and let go of many of the things I enjoyed doing as a machinist. I was very proud of what we had built, but I really wanted to get back to basics. So, in early 2017 I sold my half of Spidertrax Offroad to my partner and took that money to buy the new house and open Nueva Precision, Inc.

What sort of machines and CAM software do you have in your new shop?

Right now for CNC machines I have a 2018 Haas VM3, a 2018 Hass VM2, a 2012 Haas VF2, and a 2012 Haas TL2. I also have an engine lathe, a Bridgeport knee mill, Kaeser screw compressor, which I absolutely love, and a couple of Jet saws.

For software, I still use GibbsCAM. I have been using GibbsCAM since 1996 and have had countless hours of training and experience using it, so I think I’m a lifer.

haas vf2

Outside of tooling, what are some key components of your machining setup that you would recommend to others?

I started Nueva Precision without any sort of probing system in place, and using an umbrella style tool changer. I found out quickly that my time, especially being alone, is worth a lot. I highly recommend getting a solid probing system as well as a side mount tool changer. I added all of that to my VM3 and the effect was immediately noticeable. It is so much more efficient and faster.

Keeping software up-to-date is also key. It can be expensive, but it speaks for itself in just a few months. Any time I invest in technology, it seems to pay off pretty quick.

5th axis workholding

I also feel strongly about having solid workholding. I have a couple of the 5th Axis self-centering vises which are great, and a handful of Kurt vises, as well. I am also a big fan of the MMM-USA guys and their vise jaws and handles. For my shop, flexibility is key because I never know what can come through the door. I don’t do a lot of production work and spend much more time on prototype work, so flexibility is key. Having good quality workholding that I don’t need to worry about lets me swap parts in and out with ease.

As for tool holding, I ran into an issue last year where I was starting to see a lot of tool pullout and was scrapping too many parts as a result of aggressive roughing. I had to find a better solution, and I came across the REGO-FIX PowRgrip system. It might seem expensive compared to other simpler tool holder, but I think the upfront investment isn’t too bad considering the other options in that space. Again, I invested in technology, and immediately saw better results. I currently use the PowRgrip for finishing passes where I need good runout and heavy roughing where there is the highest risk of tool pullout.

REGO powRgrip

You use a lot of Helical’s Reduced Neck end mills. What are some tips or tricks you have learned by using these tools that you could share with others?

My experience with these tools is really new, but I find myself using more and more of them these days. In the beginning, I was afraid of end mills with a longer length of cut singing like crazy in the machine. I started experimenting with the reduced neck tools from Helical and was blown away by the rigidity. The tool pressure remains consistent throughout the part, so you will get the same great results on the top of the part as on the bottom.

I don’t know how many people are currently using them but it makes so much stuff possible. I have gone as large as ¾” diameter with the 5” reach and have never had an issue. Maintaining the low levels of runout is definitely key with these tools, which again comes back to having solid toolholding. Now that I have the REGO-FIX system, I am getting much better runout and plan to start pushing the reduced neck tools even harder.

helical reduced neck end mill

Most of my reduced neck end mills are the standard style, but the chipbreaker with the reduced neck has been a powerhouse for me as well. No matter what I tried with Helical’s reduced neck tooling, I have had success, so I would recommend the entire line if the situation calls for it. Just be careful with runout and make sure to double check your clearance!

What are some of your key Helical products that you use on a daily basis?

My main workhorse is Helical EDP 29422 – the ½” 45 Degree Chipbreaker for Aluminum. I swear I use that tool every single day across all of my machines. That tool is gold for me; it is night and day compared to standard roughers. It has a long enough flute length to be versatile or aggressive, depending on the situation. It is just a great tool. You will need a good holder for sure to keep it from pulling out when you get aggressive, but again my new software and tool holding helps with that.

helical solutions

Outside of performance, I love getting the smaller chips that the chipbreaker tools create. It is so much easier to clean a machine with small chips than long, stringy ones, which saves me time. I do all my roughing with chipbreakers. If you are making stringy chips while running HEM toolpaths, they can be a major pain to deal with.

My customers love the finish that Helical gives me as well. The wiper flat on the bottom of the H40ALV-3 end mill stands out as one of my favorite features on any of my tools. That tool gets me compliments on the floor finishes of pockets and enclosures all the time. Across the board, tool life and finish has been awesome with my Helical end mills. I currently use the Zplus coating for all my aluminum tools and have no complaints.

part finish

This summer I had the privilege of working on some aerospace parts that will be going up into space!  Most all parts were being machined from pre-hardened stainless steels and exotic alloys.  The Helical 5-flute and 7-flute endmills with the Aplus coating proved to be great tools to have in the arsenal.

What are your “go-to” Harvey Tool products?

For Harvey Tool, I use a lot of the full radius Keyseat Cutters to surface mill areas you can’t get to with a ball nose end mill. This saves me valuable time because I can avoid flipping the part to surface mill both sides by doing it all in one operation with the Keyseat Cutter.

keyseat cutter

Outside of the keyseats, I use a lot of miniature end mills with reduced shanks and chamfers mills in a variety of angles. I also use lollipops (undercutting end mills) to surface mill parts with hard-to-reach holes.

Overall, being able to look through a single catalog and find tons of options for neck diameters and cutter diameters is what sells me on the Harvey Tool product. It is really neat to have all those different tools available to me in one place – it’s a great catalog.


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Master Machine Manufacturing – Featured Customer

Master Machine Manufacturing, or MMM USA, is a family-owned and operated machine shop based out of Tulsa, Oklahoma. Master Machine is a rapidly expanding company which has seen serious growth as both a job shop and as an OEM Manufacturer of their own Quick Vise Handles and Piranha Jaws for CNC machinists.

Brothers Geordan and Nace Roberts, along with their mother, Sherry Roberts, are the owners of Master Machine Manufacturing. With Geordan and Nace, we dove into topics like having a growth mindset, working smarter instead of harder, and expanding a “job shop” business while also creating and manufacturing their own OEM products.

Tell us a little about Master Machine’s history and the type of work that your company does.

Geordan: Master Machine has been in business since 1981. Our father, George Roberts, started the business. At the beginning it was a pretty typical manual machine shop operating primarily as a job shop. As Nace and I got older, Dad introduced us to the business and we started working there part-time, eventually transitioning into full-time employees. In 1996, we transitioned to high precision machining with our first CNC machine – a Haas VF1, and we kept adding new CNC machines from there.

Nace and I took over in 2013 after our Dad passed. We had to make the transition from managers and shop foreman to owners and dealing with customers. We now own and operate the business with our mother, Sherry Roberts.

master machine

Geordan, Nace, Sherry, and the rest of the MMM USA team at IMTS with Mark Terryberry from Haas Automation

At its core, Master Machine is a job shop that does a lot of high precision machining. We work on things like lab test equipment, parts for the aerospace industry, and a lot of parts for the oil and gas industry. More medical jobs and odd things like parts for off-road racing have started to come in recently as well. One cool thing about us is that we have the unique ability to operate as a job shop, but also to design and manufacture our own products. Many of your readers have probably seen some of our vise handles and jaws in use online, especially on Instagram.

Your MMM USA Jaws and Vise Handles have become extremely popular in the CNC machining community. Where did you get the idea for that product?

Geordan: We had been using other brands of vise handles and jaws for a long time and got tired of buying products that were cheap and didn’t work well. We had this idea for a while, so in 2013 when things started to slow down a little bit, we had an opportunity to spend some time and design our own products. It was just about 2 years ago that we designed our first vise handle and Piranha Jaws. After using social media, showing them off at IMTS and other Industrial Trade Shows, they really started to take off. Our vise handles and jaws have really started to become a business of their own over the past couple of years.

vise handle

Can you breakdown the shop for us? What are you working with in terms of shop size, machine capabilities, and software?

Nace: We operate as a 100% debt-free company, so we grow as we need to. We have been at our current location for 10 years with 5-7 different additions along the way. Our shop is now spread across 10,300 square feet.

We currently have 18 CNC milling machines, including our original machine, the 1996 Haas VF1. We have been growing very fast over the past 10 years. From 2004-2007, we only had 3 CNC mills, and we have acquired the other 15 machines all in the last decade. We like buying from companies that make their products right here in the USA, so we have grown our shop through the Haas line of machines. Almost everything we own here is made by Haas Automation. In fact, our Haas VF4 and our 5-axis Haas UMC750 are some of our biggest mills in the shop right now.

Geordan: We also have other capabilities in the shop. We can do welding, painting, surface grinding, and we have a nice setup of bar feeders and lathes. For software, we use a lot of BOBCAD V31 for our 4th and 5th axis mill programming and all of our lathe programming, Nace uses a lot of Autodesk Fusion 360 for the mill side of things.

For inspection, we have many inspection tools, including a Fowler Z-Cat CMM that can measure down to +/- .0002″ for our most high precision jobs.

How did you guys first get involved in manufacturing?

Geordan: I started machining with my Dad at age 13, and got into it full-time after high school, but was not yet fully committed. At this point, I learned manual and CNC machining entirely through working with my Dad and my Uncle.  It wasn’t until my Uncle, the main machinist in our shop, decided to split off and start his own shop that I was faced with a more urgent need to commit to the family business. So I decided to make manufacturing a full time career move and started learning fixturing, programming, and everything I needed to know to be successful. We still have a great relationship with my uncle and his shop and I wouldn’t be where I am today without him stepping out on his own.

Nace: I didn’t know what I wanted to do with my life. I just knew I wanted to make money, and a lot of money. I was actually in college for radiology and physical therapy, but I didn’t like the layout of the career path. I could not convince myself to wait to start making real money until I had finished a long education and received a license 6-8 years down the road.

Instead of physical therapy and radiology, I started taking more computer engineering courses and learned a lot about programming and technology. After my uncle left, I told my Dad I would like to be a bigger part of the business and take what I knew from my computer programming classes and apply it to the shop. Within a year I had gone from never running a CNC to fully doing everything on the machine. My computer programming skills definitely helped me make the transition into CNC machining and programming.

master machine

As a second generation owner of a family business, how do you stick to those family values while also rapidly expanding the business?

Nace: We have grown a lot with our systems and technology, but our culture has also changed since we took over. We educated ourselves on workplace culture and maintaining a positive work environment. When we were kids, Dad worked probably 100 hours a week and we were always fortunate that he was able to provide us with food, clothes, and a roof over our heads. But no matter how hard he worked, he can’t replace the time with us that was spent working.

One of the major improvements we focused on was trying to maintain repeatability. Everything in the shop is labeled in boxes and readily available for our employees. Ultimately, we want to do everything we can to make it easy as possible for our employees. We want to work smarter, not harder, so there is more time for our employees to spend with family and not spend their lives in the shop.

As owners, we often need to work odd hours of the day to maintain the business, but we do it in a way that makes sure we have our family time. There are many times where we will go home, have dinner and hang out with the family, and wait until they are all sleeping to go back to work until 2 or 3 a.m.. We will get back home later that morning to sleep a little and have breakfast with the family and send them on their way before heading back in to the shop.

Working with family, we have to remind ourselves that business is business, and outside of business it is all about family. It can be tough to differentiate those two, but you have to. We went to business counseling and learned how to respect family members and build up the team while also making tough business decisions. We have our tough moments at the shop, but at the end of the day this is still your family. You can’t carry any frustration with other family members outside of those shop doors and into the home.

mmm usa piranha jaws

What are some other things you have done to maintain your “Work Smarter, Not Harder” mantra?

Geordan: One of the first things we did was look into getting more tooling and better tooling. We paid more for tools that can push harder and faster, and last longer. When Dad ran the shop, he would just buy whatever he thought we could afford and still get the job done. Now as CNC technology and advanced CAM systems have improved, the need for quality tooling is extremely important. Finding the best and most reliable tools helped take our shop to the next level and that is where Harvey Tool and Helical come into play.

Nace: We like to be the “purple cow” of the industry, differentiating ourselves in any way that we can. We strive to maintain a certain level of quality across our website, our Instagram page, our products, and the entire business as a whole. We are proud to support products made in the USA and keep supporting American manufacturing to help keep the business thriving in our shop and others. We are always happy to support companies like Haas, Harvey Tool, Helical, and many others who are doing it all right here in the USA.

What are some of your “go-to” Harvey Tool and Helical products?

Geordan: The Helical Chipbreaker End Mill for Aluminum is key for making our vise handles. We use the ½” end mill and run it at 10k RPM, 300 IPM with a .700” DOC and 40% stepover. We can push those tools harder than others while also maintaining our product’s quality. We also rely heavily on Helical’s HEV-5 for our steel applications.

One of our favorite and most-used tools is the Harvey Tool 90 Degree Helically Fluted Chamfer Mill. We use the 3-flute style on everything that isn’t Aluminum because we can simply push it faster and harder than anything else that we have tried.

master machine

Nace: We actually keep a ton of other Harvey Tool and Helical products in our Autocrib. It made sense for us to get an inventory system, and we got a great deal on a system during the recession. Industrial Mill & Maintenance Supply got us hooked up with an Autocrib and a ton of tools, and they have been great at supplying it whenever we need more. It has helped a lot having an inventory system like that. It is reassuring to know that we have the best tools ready on hand so we can eliminate any potential downtime.

Master Machine is everywhere in the online machining community, specifically on Instagram. How has online marketing and social media changed the way you promote your business?

Geordan: Most people who run businesses seem to just hope that the word of mouth gets out there, or they have a website and hope it just goes viral one day and gets some attention. With the way the Internet is so crowded these days, you have to do something more to stand out. On our side, we have boosted our business through the use of paid online advertising with Google, boosting our SEO (Search Engine Optimization) to rank higher in search results, and being heavy users of social media like Instagram.

When I started the Master Machine Instagram account, I was really just using it to see what other machinists were doing. It was actually only a personal account for my use. I was skeptical of Instagram because of the Facebook community of machinists. I always viewed Facebook as a little more negative and less productive, while the Instagram community was much more collaborative.

mmm usa

I started by following people like Aeroknox, Kalpay, John Saunders, Bad Ass Machinists, and Tactical Keychains. I immediately noticed how helpful everyone was. I started posting as a business just about 2 years ago, when I posted our first version of the vise handles. Almost immediately people started asking to buy them. We were blown away by the response.

We didn’t set out to create something new with these handles, but by getting our name out there and filling a need for people following us, the hype continued to grow and grow and grow. Instagram has been a great tool for that aspect of the business, especially. We now have around 15 distributors across the US who are carrying our products, and are getting some great momentum. We also sell a lot of our products direct on our website, and 99% of that probably comes through Instagram.

Nace: We have actually landed distributors through someone following us online and going to their integrated distributor asking for our products. The distributor then called us and asked if they could carry our product on their shelves. Other online connections have also helped us land distributors through simple messages and phone calls.

Where do you see MMM USA in 10 years?

Nace: That’s a tough question…

At the shop, we always stress four major actions: Define, Act, Measure, and Refine. In our eyes, there are always better ways to do things and improve our processes. We hire people to have a growth mindset, and so we are redefining our future every day through our continual improvement process. We strive to always have that growth mindset to figure out how to do a job more efficiently. With constant improvement always taking place, it is hard to nail down exactly where the shop will be in 10 years, 5 years, or even 1 year from now. One thing is for sure – we will be successful.

Geordan: Something we do want to focus on is creating new assets, exploring new ventures, and doubling in size every year. We want to continue to release new products to build out our own product line and have MMM USA distributors worldwide.

Back in the day, Kurt Workholding was just a job shop, and now they are one of the most recognized workholding brands in the CNC machining industry. It is really hard to say where this ends or goes, but we think we have a bright future as both a job shop and as a supplier of our own OEM products for manufacturing.

vise handles

Are you currently hiring new machinists? If so, what qualities and skills do you look for?

Geordan: Every Tuesday we have an open interview at 4 PM. As you can imagine, with our company’s growth, we are constantly hiring. We are looking for people that are positive that have a growth mindset who can grow within the company. We always believe we can promote from within. Most of our people have been at Master Machine for 10-15 years because we can always move people up closer to the top and help them advance in their careers as we grow.

Nace: We are really focused on finding people with good attitudes, and people who want to be here. Skilled machinists are great, but they can be rare, so attitude and fitting in with the culture is huge. We can always take a good attitude and train the skill level up, but we can’t take a good skill level and change the bad attitude. We want team members who will coach each other up and help improve the team as a whole. We love working together and supporting the business together in every aspect of the business.

master machine

What is the best advice you have ever received?

Geordan: We really like “Notable Quotables.” Here are a couple of our favorites.

“The pen is for remembering, and the mind is for making decisions.”

We only have so much brain power to make crucial decisions, so we write all the day-to-day action items down on our checklists to make sure nothing is left undone. That frees our minds up from having to remember every little piece of the business so we can save that brain power for strategic decision making moments. We must be proactive and not reactive as we lead our team.

Nace: “Your employees want to follow someone who is always real, and not always right.”

As a leader, you need to take responsibility when you screw up, and be open with the team. Let them be a part of fixing the problem, and approach every situation looking at the positive.


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Fleet Machine Co. – Featured Customer

Fleet Machine Co. was founded in 2010 to dramatically outperform other contract manufacturers by fusing advanced machine tools, automation and custom software to achieve what they call “Zero Manufacturing”. The team at Fleet Machine take pride in their ability to produce zero defects, zero missed delivery dates, carry zero part and material inventory, and maintain zero process inefficiencies. Every strategic decision and investment that they make is based on this philosophy of eliminating waste and human error from the manufacturing process.

For Manufacturing Day 2018, the team at Fleet Machine hosted several shop tours for Harvey Performance Company employees. Employees across all departments from Customer Service and Marketing to Finance and Accounting were given a in-depth tour of Fleet Machine’s manufacturing process. Josh Pregent, co-owner of Fleet Machine, was kind enough to host the tours at his shop and talk to us for this post. We talked with Josh about manufacturing automation, the challenges of obtaining AS9100/ISO9001 certification for your business, and the advantages of different milling machine types.

Thanks for hosting our team at your shop. It was a great tour! To get started, tell us a little bit about Fleet Machine’s history, and what sort of products you typically manufacture.

Fleet Machine Co. was incorporated in 2010 in Gloucester, MA to manufacture precision components for the Aerospace, Defense, Medical, and Robotics industries. Fleet’s emphasis on quality, customer service, and professionalism quickly distinguished us from other manufacturers and allowed us to outgrow our original location and expand to our current location. Since our inception, we have devoted our company to automating manufacturing and business processes to minimize human interaction and error in the manufacturing process. Our ultimate goal is to completely eliminate all human involvement in production. This may seem like a lofty goal, but you have to have dreams!

Fleet Machine

How did you first get involved in manufacturing?

My business partner and I both worked in a machine shop while we were in college and instantly became interested in manufacturing. Over the years, we advanced through the different facets of manufacturing, learning everything we could. In 2010 we seized an opportunity and decided to branch out on our own to start Fleet Machine.

Do you have any advice for someone who is looking to open their own shop?

Opening your own shop involves more than knowing how to program and machine. You also need to be willing to sacrifice some of your free time by working long hours to build your business from the ground up. Being a great machinist is important, but you also need to understand the basics of business, and you need to be able to sell your service and maintain a certain level of quality to keep your customers coming back.

We saw a good mix of machine types while walking around the shop floor. What sort of machines and software do you have here in the shop?

Fleet currently has three two axis turning centers, four three axis VMCs (Vertical Milling), one mill/turn with sub-spindle, and two HMCs (horizontal milling) with sixteen work stations each. It is a long list, but the specific types of machines we have in our facility are listed below. For software, we use a custom Salesforce CRM module, E2 MRP, and Mastercam 2019 for programming.

CNC MILLING

  • (2) Akari-Seiki 450i HMC 27 x 26 x 25 X, Y, Z Travel, dual 400mm pallets, 15,000 RPM, through spindle coolant, 80 tools
  • (2) Mori-Seiki MV-40E VMC 22 x 16 x 18” X, Y, Z Travel, 20 tools, 8000 RPM
  • (1) Mori-Seiki MV-40B VMC 31 x 16 x 20” X, Y, Z Travel, 20 tools, 8000 RPM
  • (1) Haas VF-2 VMC 30 x 16 x 20” X, Y, Z Travel, 25 tools, 10,000 RPM

CNC TURNING

  • (1) Mori-Seiki SL-15 5000 RPM, 9” maximum turning diameter x 16” maximum length
  • (1) Yama-Seiki GA-2000 6000 RPM, 13” maximum turning diameter x 20” maximum length, programmable tailstock, tool setter
  • (1) Doosan Puma 240MSB 6000 RPM, 11” maximum turning diameter, 18” maximum length, dual spindle, live tooling, C-axis milling, tool setter, part catcher/part conveyor
  • (1) Mori-Seiki CL-200 4000 RPM, 11” Maximum turning diameter, 12” maximum length

fleet machine

How has the mill/turn CNC machine helped you speed up production? Would you recommend it to others?

Our mill/turn machine has helped us increase production by reducing our setup time. There is no longer a need to remove a turned part, get it over to a mill, and set everything up again. Most basic milling operations can be performed on the mill/turn machine, so it is a great time saver.

We would definitely recommend this type of machine to other shops. Ultimately, we highly recommend any machine/software/process/ancillary equipment that eliminates or reduces human labor. Manufacturing is a ruthlessly competitive, tech-driven industry and the failure to invest in technology of this type exposes you to over reliance on expensive, scarce, and potentially unreliable human labor and possible obsolescence.

You also have both horizontal milling centers (HMCs) and vertical milling centers (VMCs). What has been your experience with both, and do you prefer one style over the other?

In my opinion, HMCs are superior to VMCs in every respect due to the additional axis, superior chip evacuation, greater load capacity, and the ability to run unattended with pallet pools. VMCs are still useful for simple jobs and rapid prototyping, but for high production runs we lean on the HMCs to get the job done.

Fleet Machine

What have been some of your keys to success for expanding the business and growing your shop to take on more work?

Fleet Machine provides a superior product in terms of quality and value and uses automation and poke yoke techniques to streamline processes and eliminate the possibility of error.

We noticed the banner hanging in the shop celebrating your AS9100/ISO9001 certification. How important has that been in your manufacturing process?

Having an AS9100/ISO9001-certified quality system will improve every aspect of your organization while eliminating waste, improving product quality, and improving OTD. Imposing the discipline required to attain certification on your company will reveal inefficiencies that you never realized existed.

Do you have any advice for shops looking to try and get their AS9100/ISO9001 certification?

It is easily worth the investment but it requires attention to detail, extensive documentation, focus on constant improvement, and a real commitment from all employees. It needs to govern every aspect of your business, from the quoting process to shipping. If you don’t have someone who is extremely organized and enjoys data collection, measurement, and documentation, or employees who aren’t compliant or don’t understand the value of certification, it probably isn’t for you.

Fleet Machine

Who are some of your key customers?

Some of our key customers (the ones we can name) include Hill-Rom, United Technologies Corp, Rockwell, and B/E Aerospace. We do work under NDAs for some projects so we cannot reveal all of our customers, but they are heavily skewed to the Aerospace, Medical, Robotics, and Defense industries.

How do Harvey Tool products help Fleet Machine stay at the top of their game?

Harvey Tool products are an integral part of what we do, from the quoting process through finishing. Fleet relies on the tooling engineers and technical support team at Harvey to help us produce parts that we wouldn’t otherwise be able to make.

What skills or qualities do you look for when hiring a new machinist?

Fleet Machine has a robust training program for all new employees. We look for important soft skills such as good written and verbal communication, reliability, a positive attitude, the ability to work as part of team, and basic computer skills. We have found that people with this combination of attributes rapidly surpass people with machining skills who lack these qualities.

Being well-rounded is important as an employee in any business, but as manufacturing progresses to become more and more technology-based it will be important to hire machinists with computer skills and technological know-how to stay ahead of your competitors.


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Liberty Machine – Featured Customer

Liberty Machine, Inc. is a small Aerospace and Defense-focused machine shop located out of owner Seth Madore’s garage in Gray, Maine. In just a few years, Liberty Machine has transformed from a side hustle into a full-fledged machine shop with customers all over the world.

We were given the chance to visit Seth at his shop in Maine and interview him for this post. We picked Seth’s mind about entrepreneurship, the online manufacturing community, some interesting home construction choices made to accommodate a machine shop, and more.

Thanks for having us come out and visit the shop for this Featured Customer post. To get started, tell us a little bit about Liberty Machine’s history, and what sort of products you typically manufacture.

I founded Liberty Machine, Inc. out of my garage about 6 years ago while I was still working full-time at one of Maine’s largest (and best) Aerospace and Defense shops. I was working close to around 80-100 hours a week, maintaining my full-time job as well as coming home and making chips in the evenings and weekends. At first, I was doing a lot of smaller pieces and one-off parts, such as fixtures and prototype work to help build up a customer base and make enough money to eventually upgrade my machine.

In the early years, I was using an old 1982 Matsuura MC-500 Mill that I picked up for around $6,000. I used that machine to generate enough cash flow and eventually pull the trigger on a 2015 DMG Mori Duravertical 5100 with a 4th axis, probing and high-pressure coolant which really allowed me to take on the type of aerospace and defense work I had been doing at my day job and make the leap into full time entrepreneurship in my own shop. Now, we have the capabilities to focus on aerospace and defense work for major clients all over the country.

We are still working out of my garage, with myself and one other employee, but there are hopes for further expansion in the future as we acquire more work and expand our customer base. If you want to keep up with our shop, follow us on Instagram @liberty_machine!

Liberty Machine

You have a great shop here and are definitely maximizing the space. How much square footage are you working with?

Currently, we are working out of a 940 sq/ft shop. We “technically” have room for one more CNC mill if we really squeezed things together. I don’t think that is in the cards though; it is more likely that we will move to a larger space if and when the time comes for expansion. Heat management and air quality are real issues when working in small spaces with low ceilings, which is something we deal with currently.

What sort of machines and software do you have here in the shop?

For now, we have two VMC’s and a decent amount of inspection equipment. We have the DMG Mori machine I previously mentioned, as well as a 2016 Kitamura-3XD. Both machines have 12k spindles, Renishaw probes, and feature coolant through spindles.

For inspection equipment, we have a 2014 Mitutoyo QM-Height 350 Digital Height Gage, a 2003 Brown & Sharpe Gage 2000 CMM with Renishaw MIP Articulating Probe Head, and a 2003 Mitutoyo PH-A14 Optical Comparator. We also recently acquired a Scienscope Stereo/Digital microscope. This allows us to perform visual inspection of our parts at an extreme amount of detail.

Liberty Machine

There are still holes in our inspection lineup, so we are always looking at adding onto what we do to provide our customers with quality machined products.

For CAD/CAM software, we use Autodesk’s Fusion 360 as well as Inventor HSM.

You mentioned using Fusion 360 for CAD/CAM. Some of our readers may know you from the Autodesk CAM forums as an “Autodesk Expert Elite.” How did that come together?

About 4-5 years ago, I knew I needed a legal, supported, capable CAM solution. After several “30-day trials” of the more affordable packages, I stumbled upon Fusion 360. Having a fair amount of experience with Esprit and MasterCAM, I taught myself Fusion 360 in between running my shop and trying to spend what little time I had with my wife and children. Even though I had prior experience in other CAM packages, I still had lots of questions. I turned to the Fusion CAM Forums for assistance. The employees and other users were excellent to work with and got me sorted out quickly.

Liberty Machine

After I became more comfortable with the Fusion 360 software, I decided to spend some of my free time helping others by answering their questions on the forums. I wanted to give back to the community that had helped me learn. Autodesk eventually took notice of my constant presence on the forums and granted me the title of “Autodesk Expert Elite,” an honor given to some of their most prolific community members and advocates. Now I work with them to help test new features, provide insight from a user’s point of view, and participate in events like Autodesk University.

How did you first get involved in manufacturing?

I will be honest – I never meant to end up working in manufacturing. When I was a teen, I had glamorous ideas about law enforcement, federal work and so forth. But, life doesn’t always work out that way (I met a wonderful girl and goals shifted, so I started looking for alternate career paths).

My friend (future brother-in-law) was a machinist, so I started asking about his work and what it involved. He was working in a “job shop” using all sorts of cool machines and technology I had never really heard about. I was very excited about this career shift and I pursued it with fervor. 19 years later and I still LOVE this trade. The thing that intrigued me most about manufacturing, and the real reason I became so fixated on the trade, was the integral role the machinist plays in every aspect of manufactured society. I believe it is the most fundamental profession there is, and I take great pride in it. The evolution of the trade from manual machining to skilled programmers running CNC machines has always fascinated me as well and has kept pushing me to learn more and continue growing as a machinist.

Liberty Machine

Is it true that you built an addition to your garage specifically for the DMG Mori machine?

That is true! Before I bought the machine, I knew it was going to be too tall for my existing space, and was also going to need a solid foundation to sit on (it weighs 7 tons). Before the machine arrived, I had a concrete slab poured right against the side wall of the existing garage, and placed the DMG Mori on that slab.

After a couple days of unfortunate rain and multiple layers of tarps covering the machine, I had several family members (carpenters by trade) help me build the addition. Ok…I helped them. They were able to get it all framed and covered in just one day, breaking down the side wall of the garage and literally building the new space around the dimensions of the machine. Like they say, if there is a will, there is a way!

Running a shop out of your garage must have been a challenge to startup. What were some of the growing pains you experienced as this shop was built out?

On a professional level, the struggle was real. Two jobs, huge payments on the horizon, wondering where all the work (and money) is going to come from… As I mentioned, at that point, I was working 100 hours a week between the two jobs, and really feeling wiped out at the end of each week. However, the hard work did eventually pay off. Once I was able to get the DMG Mori and prove to customers that I had the capabilities to go full-time on my own, it was all worth it.

Liberty Machine

Outside of that, there were the literal growing pains, like cutting holes in my garage ceiling to fit the column on the Kitamura machine, and of course, building an addition to house the DMG. But like I said, it was all worth it in the end to own my own shop.

What is the best thing about working for yourself?

I’d say the best thing about working out of my shop (and for myself) is seeing my family on a daily basis. Yes, I still work 60-70 hours a week, but to have breakfast with them each morning before our day starts and have the flexibility to shift schedules around for doctor visits and other “life stuff” is worth its weight in gold. We are all so busy in life and I think we suffer as a society because of it. I want my children to know what it’s like to have a parent that is around. Busy, yes. But still present.

You mentioned that you had used a lot of Harvey and Helical tools at your last job. However, once you were on your own, you could choose any tooling you wanted to use. What made you stick with the Harvey Performance Company brands as your go-to tools?

The thing with Harvey Tool and Helical products that keep me coming back is the consistency of quality. I know that when I buy one of these tools, I am going to get a high-performing tool that has gone through multiple levels of inspection and is consistently ground within the tight tolerances that were promised. I honestly cannot remember a single time I have had to send any Harvey or Helical tools back for quality issues.

Liberty Machine

I tell friends and others in the manufacturing community about the tools, and the hurdle is always getting them to look past the slightly higher cost. That additional cost is always worth the payoff in the end knowing that you have a tool that will produce quality parts and shave valuable minutes off your cycle times. The slightly higher cost of the Harvey/Helical product is small change compared to the long term cost savings associated with their performance.

Can you remember a key moment where Harvey Tool/Helical products really saved the day?

Truthfully, Harvey and Helical are my first thought when I’m looking at a challenging feature on a new part. If they offer something that looks like it will work, I don’t even look for an alternative. Order it, get it in house. I’d say where Harvey helps the most is their awesome selection of long reach/stub flute end mills for stainless steel. I cut so much of that, so it’s great to have a vendor stock what is truly needed.

Liberty Machine

Would you recommend entrepreneurship to other young machinists hoping to open their own shop some day?

Yes! But like all things in life, “It depends.” Entrepreneurship is certainly not for everyone. The amount of work required to get a shop rolling and out of “crisis-mode” is insane. There is no other term for it. If you have a significant other in your life, MAKE SURE they are on the same page as you. I am blessed to have a wife by my side who sees the end goal and is understanding of the sacrifice needed in the short-term for the long-term benefit of our family.

What advice might you want to give to someone starting in this trade?

Don’t stop learning. Keep your ears open and your mouth shut. That old guy in the shop has likely forgotten more than you will ever learn. The amount of tools in your Kennedy box doesn’t mean you’re a good machinist. Some of the best toolmakers I knew had small boxes with only the common tools. Learn how to excel with limited resources. Ask questions, and own up to your mistakes.

Understanding Threads & Thread Mills

Thread milling can present a machinist many challenges. While thread mills are capable of producing threads with relative ease, there are a lot of considerations that machinists must make prior to beginning the job in order to gain consistent results. To conceptualize these features and choose the right tool, machinists must first understand basic thread milling applications.

 

What is a thread?

The primary function of a thread is to form a coupling between two different mechanisms. Think of the cap on your water bottle. The cap couples with the top of the bottle in order to create a water tight seal. This coupling can transmit motion and help to obtain mechanical advantages.  Below are some important terms to know in order to understand threads.

Root – That surface of the thread which joins the flanks of adjacent thread forms and is immediately adjacent to the cylinder or cone from which the thread projects.

Flank – The flank of a thread is either surface connecting the crest with the root. The flank surface intersection with an axial plane is theoretically a straight line.

Crest – This is that surface of a thread which joins the flanks of the thread and is farthest from the cylinder or cone from which the thread projects.

Pitch – The pitch of a thread having uniform spacing is the distance measured parallelwith its axis between corresponding points on adjacent thread forms in the same axial plane and on the same side of the axis. Pitch is equal to the lead divided by the number of thread starts.

Major Diameter – On a straight thread the major diameter is that of the major cylinder.On a taper thread the major diameter at a given position on the thread axis is that of the major cone at that position.

Minor Diameter – On a straight thread the minor diameter is that of the minor cylinder. On a taper thread the minor diameter at a given position on the thread axis is that of the minor cone at that position.

Helix Angle – On a straight thread, the helix angle is the angle made by the helix of the thread and its relation to the thread axis. On a taper thread, the helix angle at a given axial position is the angle made by the conical spiral of the thread with the axis of the thread. The helix angle is the complement of the lead angle.

Depth of Thread Engagement – The depth (or height) of thread engagement between two coaxially assembled mating threads is the radial distance by which their thread forms overlap each other.

External Thread – A thread on a cylindrical or conical external surface.

Internal Thread – A thread on a cylindrical or conical internal surface.

Class of Thread – The class of a thread is an alphanumerical designation to indicate the standard grade of tolerance and allowance specified for a thread.

Source: Machinery’s Handbook 29th Edition

Types of Threads & Their Common Applications:

ISO Metric, American UN: This thread type is used for general purposes, including for screws. Features a 60° thread form.

British Standard, Whitworth: This thread form includes a 55° thread form and is often used when a water tight seal is needed.

NPT: Meaning National Pipe Tapered, this thread, like the Whitworth Thread Form, is also internal. See the above video for an example of an NPT thread.

UNJ, MJ: This type of thread is often used in the Aerospace industry and features a radius at the root of the thread.

ACME, Trapezoidal: ACME threads are screw thread profiles that feature a trapezoidal outline, and are most commonly used for power screws.

Buttress Threads: Designed for applications that involve particularly high stresses along the thread axis in one direction. The thread angle on these threads is 45° with a perpendicular flat on the front or “load resisting face.”         

Thread Designations

Threads must hold certain tolerances, known as thread designations, in order to join together properly. International standards have been developed for threads. Below are examples of Metric, UN, and Acme Thread Designations. It is important to note that not all designations will be uniform, as some tolerances will include diameter tolerances while others will include class of fit.

Metric Thread Designations              

M12 x 1.75 – 4h – LH

In this scenario, “M” designates a Metric Thread Designation, 12 refers to the Nominal Diameter, 1.75 is the pitch, 4h is the “Class of Fit,” and “LH” means “Left-Hand.”

UN Thread Designations

¾ 10 UNC 2A LH

For this UN Thread Designation, ¾ refers to the thread’s major diameter, where 10 references the number of threads per inch. UNC stands for the thread series; and 2A means the class of thread. The “A” is used to designate external threads, while “B” is for internal threads. For these style threads, there are 6 other classes of fit; 1B, 2B, and 3B for internal threads; and 1A, 2A, and 3A for external threads.

ACME Thread Designations

A 1 025 20-X

For this ACME Thread Designation, A refers to “Acme,” while 1 is the number of thread starts. The basic major diameter is called out by 025 (Meaning 1/4”) while 20 is the callout for number of threads per inch. X is a placeholder for a number designating the purpose of the thread. A number 1 means it’s for a screw, while 2 means it’s for a nut, and 3 refers to a flange.

How are threads measured?

Threads are measured using go and no-go gauges. These gauges are inspection tools used to ensure the that the thread is the right size and has the correct pitch. The go gauge ensures the pitch diameter falls below the maximum requirement, while the no-go gauge verifies that the pitch diameter is above the minimum requirement. These gauges must be used carefully to ensure that the threads are not damaged.

Thread Milling Considerations

Thread milling is the interpolation of a thread mill around or inside a workpiece to create a desired thread form on a workpiece. Multiple radial passes during milling offer good chip control. Remember, though, that thread milling needs to be performed on machines capable of moving on the X, Y, and Z axis simultaneously.

5 Tips for Successful Thread Milling Operations:

1.  Opt for a Quality Tooling Manufacturer

There is no substitute for adequate tooling. To avoid tool failure and machining mishaps, opt for a quality manufacturer for High Performance Drills for your starter holes, as well as for your thread milling solutions. Harvey Tool fully stocks several types of threadmills, including Single Form, Tri-Form, and Multi-Form Thread Milling Cutters. In addition, the 60° Double Angle Shank Cutter can be used for thread milling.

thread milling

Image Courtesy of  @Avantmfg

2. Select a Proper Cutter Diameter

Choose only a cutter diameter as large as you need. A smaller cutter diameter will help achieve higher quality threads.

3. Ensure You’re Comfortable with Your Tool Path

Your chosen tool path will determine left hand or right hand threads.

Right-hand internal thread milling is where cutters move counterclockwise in an upwards direction to ensure that climb milling is achieved.

Left-hand internal thread milling a left-hand thread follows in the opposite direction, from top to bottom, also in a counterclockwise path to ensure that climb milling is achieved.

4. Assess Number of Radial Passes Needed

In difficult applications, using more passes may be necessary to achieve desired quality. Separating the thread milling operation into several radial passes achieves a finer quality of thread and improves security against tool breakage in difficult materials. In addition, thread milling with several radial passes also improves thread tolerance due to reduced tool deflection. This gives greater security in long overhangs and unstable conditions.

5. Review Chip Evacuation Strategy

Are you taking the necessary steps to avoid chip recutting due to inefficient chip evacuation? If not, your thread may fall out of tolerance. Opt for a strategy that includes coolant, lubricant, and tool retractions.

In Summary

Just looking at a threading tool can be confusing – it is sometimes hard to conceptualize how these tools are able to get the job done. But with proper understanding of call, methods, and best practices, machinists can feel confident when beginning their operation.

Form Factory – Featured Customer

Form Factory is a machine shop located in Portland, Oregon focused primarily on prototype work, taking 3D CAD models and making them a physical reality through CNC precision machining. Over the past 14 years, Form Factory has grown from a one man operation with a single CNC mill into a highly respected shop in the Northwest US, making prototype models for clients all over the world. Harvey Tool customers may recognize the name Form Factory from their photo on the front cover of the Fall 2018 Catalog, as they were the first place winners of the #MachineTheImpossible Catalog Cover Contest!

We talked with Brian Ross, Founder/Owner of Form Factory, to learn about how he suggests entrepreneurs and inventors think about prototyping their ideas, his unique experience working on many different models, his winning part in the #MachineTheImpossible contest, and more!

Thanks for taking the time to talk with us for this Featured Customer post. To get started, tell us a little bit about Form Factory, how you got started, and what sort of products you manufacture.

Prior to starting my own business, I had worked as a machinist at 4 different prototyping firms which is where I learned the trade and got the itch to run my own shop. I started Form Factory myself just over 14 years ago with a single Haas VF1. I had no client base and a bunch of loans. It was a scary time for me to jump in to entrepreneurship. Now, we have three CNC machines, various other components and machines, and four full-time employees.

At Form Factory we focus primarily on industrial design models and prototypes. We do a lot of work in the electronics industry, making prototypes of cell phones, laptops, printers, and other consumer electronics. Many of our models are created for display at trade shows or in Kickstarter and other product announcement videos, but we also do a fair share of working prototypes as well. It all depends on what the client wants, and we pride ourselves on the ability to deliver exactly what they need.

form factory

What sort of machines and software do you use in your shop?

We currently have 3 CNC mills – a Haas VF1, Haas VF2, and Haas VF3. We like using machines made in the USA because we like making products in the USA. Haas is what I knew and had run predominantly, and Haas is fairly common in the Northwest so it was easier to find skilled employees in the area who knew these machines well.

We use Mastercam for our CAM software, which is what I learned on. It also seems to be very common in this area which makes for an easy transition for new employees.

form factory

What were some of the keys to success as you built Form Factory from the ground up?

I based much of Form Factory’s business model on my past experiences in manufacturing. Many of the other small companies I had worked for ended up closing, even though the guys on the shop floor would be working lots of overtime and we had plenty of business. What I realized was that these other places often closed because of greed, over-expansion, and rapid growth which they could not sustain. They ended up overextending themselves and they could not keep the doors open as a result.

I like the spot I am in now because while we can certainly expand, we have found a happy medium. We have kept our customers happy and consistently deliver parts on time, so we get a lot of repeat business. Being a small company, word of mouth is one of our only forms of marketing. Word definitely gets around on how you treat people so we try to treat everyone with respect and honesty, which is key to running a good business.

form factory

Working Prototype of a “Smart Ball” Charger for Adidas

Prototype manufacturing is a very competitive segment of this industry. What sets Form Factory apart from the competition?

Understanding how model making relates to industrial design separates us from a typical machine shop. We can take a prototype design or simple drawing and we are able to implement all of the functionality into a prototype model. We do not deal much with the actual production run, which will come later, so we have the ability to focus more on the prototype and a customer’s exact needs to get a product off the ground. This level of expertise and focus sets us apart from your typical shop.

For example, if the model is for photography purposes, a trade show display, or a promotional video, appearance will be key. We will spend more time working on building what we consider to be a true work of art; something that will immediately stand out to the consumer, but may lack in complete functionality. If the client requires a fully functioning prototype, we will spend more time making sure that all of the components work as intended over multiple stages of design. The final result may be a bit “uglier” than a prototype designed for appearance alone, but it will work as intended.

Let’s say I have an idea for a new product. What should I know about getting my design manufactured?

Right now, especially with 3D printing and cheap overseas manufacturing, it can seem very easy to prototype a new product. However, these options are not always the best route to take to get a quality prototype. With 3D printing, you get a huge step down in resolution and quality, although you can save in cost. You can also save on cost by having things made overseas, but the communication can easily breakdown and the quality is often lower. The other factor is that virtually anyone can end up copying your product overseas and you have very little protection against that.

form factory

By going with a local machine shop and sticking with CNC-machined parts, you are guaranteed to get a higher quality finished product with better communication. We do a ton of back and forth communication with our clients to understand their exact design intent. With a prototype, there are often a lot of blanks that need to be filled in to completely understand the product, and we do our best to communicate with the client to deliver the perfect piece, and always on time. Sure, your cost may be higher, but the entire process will be smoother and the time saved on revisions or scrapping poor quality prototypes is invaluable.

It sounds like you guys take a lot of pride in the work you do, which is great!

Absolutely! Our models are all one of a kind works of art. We can take things from the early stages where a client might have an idea drawn on a napkin, all the way to a fully functional piece.

Our goal is always to make parts look like they grew that way. In my opinion, taking a solid block of material and making it into a finished part is truly a work of art. We work hard to determine where the burrs are, what the radiuses are, and how the finish should look, amongst many other variables. We take a lot of pride in the finished appearance and want everyone in the shop to produce the same level of quality as their co-workers. We hold all ourselves and our work to very high standards.

form factory

Finished Laptop Display Models

How has the online machinist community helped your business/changed your thinking/helped you grow as a machinist/business owner?

I follow tons of great machinists and other companies on Instagram.  It’s funny how quick you can get an idea from a simple picture or short video of another project somebody else is working on.  I love machining because after 25 years, I am still learning so much every day.  The machines, the software, and the tooling are changing so fast its hard to keep up.  Every day I see something on Instagram that makes me say “Oh WOW!” or “Hey, I can do my part that way!”  I was machining before there was an internet, so I really appreciate having an on-line community, and body of knowledge to draw from. You can find us on Instagram @FormFactory!

We loved the ball in chain part you created for our #MachineTheImpossible Fall 2018 Catalog Cover contest, and so did our followers, as they voted you into first place. Tell us a little more about that part.

So that piece was something I had been wanting to try for a while to challenge myself. It was not a part for a customer or part of a job, but simply a practice in more complex machining. The entire part was actually machined from one solid piece of aluminum on a 3 axis mill. With some clever fixturing and a few setups, I was able to make it work!

machine the impossible

Harvey Tool’s Tapered and Long Reach End Mills played a huge part in the creation. There would have been no way for me to get at those impossible angles or hard to reach areas without the multiple available dimensions and angles that you guys offer. In total, that piece took me about 20 hours, but it was a great piece to learn with and it definitely paid off in the end! As a small business, getting that exposure and marketing from being on your catalog cover was huge, and we appreciate the opportunity you gave us and the entire machinist community.

To a small business like yours, what did it mean to you to be highlighted on the Fall 2018 catalog cover?

I found out we had won when one of my customer’s emailed me congratulations! I was blown away! Even to be chosen as a finalist was exciting. The Harvey Tool Catalog is the ONE catalog we always have around the shop at the ready. I have been a Harvey fan for two decades, so making the cover of the catalog was pretty awesome!

In your career, how has Harvey Tool helped you #MachineTheImpossible?

Being able to overnight tools straight to the shop on a moment’s notice has saved us too many times to count. Harvey Tool makes some of the most impossible reach tooling; I still don’t know how they do it. ‘Back in the day” I would grind my own relief on an old Deckel. There’s nothing quite like looking for that extra 50 thou of reach and snapping off the tool! Now I let Harvey do ALL of that work for me, so I can focus on the machining. It takes nice tools to make nice parts. If you need tools that are always accurately relieved to just under the tool diameter, crazy sharp, and balanced, then look no further than Harvey Tool.

form factory

If you could give one piece of advice to a new machinist ready to take the #PlungeIntoMachining, what would it be?

Find the ‘Distance to Go’ setting or view on your machine’s control, and hit ‘feed hold’ with the first plunge of every new tool you set, and every new work offset, 100% of the time. It will save your mill and your parts from disaster. Machining is the art of doing thousands of simple things, exactly right and in the right order. The hard part is to keep your focus and pay keen attention through the entire process. Understand how easy it is to make a simple mistake, and how quickly you can be starting over. Allow yourself room for mistakes along the way by triple checking BEFORE your mill lets you know it’s too late. If you have other things on your mind, don’t machine parts.


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