Stillion Industries

Protomatic Inc.

Protomatic, Inc. is a CNC precision machine shop specializing in CNC precision machining as well as prototype and short-run production. We are capable of 3, 4, and 5-axis CNC machining, laser engraving, engineering services, and many other technical processes which set us apart from the typical run-of-the-mill CNC precision job shop with which you may be more familiar. We offer design support for your prototyping applications or manufacturing for your precision milling and multi-axis turning applications. Protomatic manufactures components and assemblies for a variety of industries, focusing mainly on medical and aerospace applications.


In February 1971, William Wetzel founded Protomatic as a high-quality prototype and short-run production machining operation. The company is located in a 30,500 square foot facility in Dexter, Michigan - west of Ann Arbor. With well over three decades of operation and hundreds of years of combined experience in materials, Protomatic excels in engineering, More... CNC milling, CNC Turning, with manufacturing and assembly of custom OEM parts and products.


 One of the most discerning characteristics of Protomatic in comparison to our competitors is our familiarity with a vast range of materials. We work with rubbers, metals, and plastics, of course, but our experience with the engineering of elemental materials and superalloys sets us apart from the competition.


 Through our facilities, diverse capabilities, vast equipment resources, and conservative, steadfast business practices, we at Protomatic have been able to supply fast, efficient service to countless satisfied customers for over four decades. We have become a leading contract manufacturer of CNC precision machining components, high-precision prototypes, and short-run machine components and assembly. Our standards of quality are ensured through a complete process of testing and state-of-the-art quality inspection.


 Protomatic has a highly qualified and experienced team of employees who are committed to on-time delivery of high quality parts at competitive pricing. High standards are ensured through a complete process of testing and state-of-the-art quality inspection. Protomatic is an ISO 9001:2008 registered company and is compliant with AS 9100C, ISO 13485:2003, DFARS, and ITAR export licensed.

Duley Machine Shop

Protomatic Aerospace

Protomatic Aerospace is a CNC state-of-the-art precision machining facility. At our spacious and highly advanced facility, we produce a large variety of aero structures and machine parts for light commercial aircraft to space vehicles for the defense industry. 


Protomatic Aerospace capabilities include 3-, 4-, and 5-axis aerospace CNC milling; 2- and 3-axis CNC turning; and 8-axis CNC multi-axis mill-turn.


Our experienced team of engineers and craftsmen make sure each and every part is efficiently designed and machined and inspected to perfection.

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Suppliers located in (Dexter, United States)

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