Precision Large Part Machining

Precision large part machining is the service that best defines our shop. We have spent a lot of money bringing precision machining practices to large part CNC machining. For example, precision machining requires state-of-the-art tools. Therefore, we have invested in modular fixtures, magnetic work-holding systems, shrink fit tooling, automated probing, and the latest CNC programming software. Also, each machine is laser leveled, and ball barred regularly.

While state-of-the-art tools are essential, having skilled tradesmen with large part precision machining experience is vital. Even with two-thirds of our workforce under 30, we have hundreds of years of combined experience. Precision machining large parts is what we do all day, every day.

Lastly, we have the tools needed to check tight GD&T on large parts.  For example, there are times when CMM (Coordinate Measuring Machine) inspection isn’t an option due to a part’s size.  Therefore, we have invested in the FARO Vantage Laser Tracker, FAROArm Quantum, and Mahr Federal Electronic Level System. If you have a large part that requires tight tolerance CNC machining, please email Or, you can schedule a meeting with our sales team.

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We have expert knowledge and the right tools for precision large part machining.

Our team consists of highly trained inspection experts. They are well versed in GD&T and use state-of-the-art inspection tools.  For example, we use FARO laser tools to inspect most parts. Between our expert team and high-end devices, you can expect quality parts.

Precision Large Part Machining | Product Examples

Equipment List

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Our Equipment List grows every year. Provide your email and download our most current list of equipment.

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Precision Large Part Machining Capabilities

We go big.
  • Weight up to 60,000 pounds.
  • Length up to 48 feet.
  • Tolerances up to 0.001 inches.
  • Aluminum
  • Armor Plate
  • Carbon Steel
  • Ductile Iron
  • Grey Iron
  • Hardox Steel
  • Red Metals
  • Stainless Steel
  • Stressproof Steel
  • Tool Steel
  • Boring
  • Counter-Boring
  • Counter-Sinking
  • Cutting
  • Drilling
  • Facing
  • Milling
  • Profiling
  • Reaming
  • Surfacing
  • Tapping
  • Threading

Quality built into every process.

Properly inspecting parts is an important aspect of our business. However, if you are catching errors in the inspection process, it is too late. There are expenses associated with rework, and often errors cause late deliveries. This is why we build quality into every process. For example, we have kickoff meetings for each job. Our welders, machinists, programmers, project managers, and painters meet and review prints in close detail and iron out any issues on the front end. We have invested in modular fixtures, shrink fit tooling, pre-setters, automated probing software, and more.  All of these tools help to ensure quality in manufacturing.

Inspection Tools:

  • FARO Laser Tracker
  • FARO Gage
  • CMM (Third-Party)
  • Mitutoyo Gages
  • Thread Gages
  • Ring Gages
  • Pin Gages
  • Calipers
  • ID/OD Micrometers
  • Dial Bore Gages
  • Other Misc. Gages

Start to finish metalworking capabilities.

As a job shop, we take on unique jobs that require unique solutions. Therefore, we have built a reliable supply chain that can take on any type of metalworking process that we are unable to handle in-house.

  • CNC Laser Cutting
  • CNC Plasma Cutting
  • Finishing
  • Steel Forming
  • Steel Plate Rolling
  • Steel Saw Cutting
  • Steel Shearing
  • Surface Blasting
  • Surface Grinding
  • Thermal Stress Relieving
  • Waterjet Cutting

Need more info? Check out our sales sheet.

Precision FARO Laser Inspection on Large Part
Precision Large Part Machining Setup and Inspection
Parallel surfaces flat within .0004 of an inch.  Napoleon
Machine uses a special process to accomplish this flatness.
1 of 4
Surfaces are measured with Mahr Federal
Electronic Levels which compare the orientation
attitude of separate or adjacent horizontal surfaces.
This tools resolution is 6 μin per foot (.1 arc second).
2 of 4
Data collected from the Mahr Levels gets
uploaded into a custom excel based macro
that lays out the readings in arc seconds
based on data collection points. 3 of 4
Kevin Febrey explains to our customer how
we level machines and use their metrology
methods to create very tight tolerances. 4 of 4
Pictured above are two different types of inspection. The top photos show the FARO Advantage Laser Tracker in action. The bottom photo shows a precision machining process that uses Mahr Electronic Levels. In this instance, we machined a flatness of .0005, over 8-feet (2.44 m), across parallel linear guide rails. While the flatness is impressive, the process is expensive.
Do we have the certifications needed to work on your precision large part CNC machining project?

"We have received the weldments from the attached quote, assembled into our machine and they have impressed our intended customer with the precision with which we were able to cut their product. You guys do very good machining work."

Standing out in a sea of fabrication and machine shops.
Napoleon Machine receives supplier of the year award

If you want to stand out in a crowd, you have to do more than deliver quality parts on time.  At Napoleon Machine, we focus on good old fashion service. We live by the golden rule and let integrity guide our every move.  Unfortunately, some companies believe virtue ends where a loss in dollars begins.  Not here; we have put our money where our mouth is on many occasions. 

In our opinion, integrity also means transparency.  Therefore, we send a weekly update report that shows what is going on with every part. If we are running behind, we’ll report it right away. 

Lastly, we won’t always get it right. But we will make it right.  You don’t have to take us at our word; check out our customer feedback.

Are short lead times important to you?

Our scheduling tool sends out lead time notices when a machine or department gets low on work.  This allows our customers to take advantage of cheaper rates and faster turn-around.