Precision Milling Shop

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Why Choose Us

Preece Machining & Assembly offers precision machining for aerospace and commercial customers across the country. We offer the same project capabilities and experience as a large shop with the personal touch of a small company. Located in Boulder, CO, we are proud to serve our customers throughout the Denver metro area and the greater Front Range.

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Our Standards

We have the technical experience to make even the most complicated of parts and have a rigorous quality manual and standard that we uphold. Our inspection capabilities are unparalleled and we care about meeting deadlines for your peace of mind. Count on us for support and experience today!

Capable of Handling Any Project

Our secure and ITAR compliant quote form allows us to provide an accurate quote within 24 hours that offers different lead times and pricing options.

With full First Article Inspection capabilities and ISO 9001:2015 certification,  we strive to only provide thoroughly checked parts of the highest quality to our customers.


Our Equipment

At Preece Machining and Assembly, we are aggressive with how much material we remove during our fabrications and enjoy pushing the limits of our machines to provide our customers with competitive prices for their parts.

Mitutoyo Mistar 555 CMM

Quality is the at the core of what we do here at Preece. We inspect every part that is produced in our shop on our Mitutoyo Mistar 555 CMM. Fully equipped with a Renishaw PH10MQ articulating head to reach tight or difficult areas without custom styli or star probes. Full first article inspection and 3rd party inspections are common place.


The VF-4SS, with its 12,000 RPM Spindle, 1000 PSI spindle coolant system, and full part probing feature, allows us to have high-volume production with shortened cycle times to improve our customers experience.



Similar to the VF-4SS, the VF-2 is a high performance machine that gives us the ability to drill small, deep holes with its 1000 PSI Spindle coolant system and 12,000 RPM Spindle for extra small tooling.

Hyundai Wia L2100SY Lathe

Our Hyundai Wia L2100SY lathe is a production work horse. Equipped with A LNS bar feeder and dual spindles this machine can handle part quantities in the thousands. In addition to dual spindles the machine has Y-axis milling capabilities. Allowing PMA to produce high complexity high volume  production runs.

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Get started today

Contact us to discuss our services and capabilities today, and let us know what you expect from your next machining project. Thank you for choosing Preece Machining & Assembly!