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.


Our Keyence XM-1200 is a powerful optical CMM that generates easy to read CMM reports with precise measurements and photos so that we can create accurate and easy to read CMM programs to share with our customers.

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.

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!