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Summit Machining Co. is a family-owned and operated precision machine shop in Portage County, Ohio, producing close-tolerance parts for orders ranging from prototypes and single digits to thousands. Established in 1945 and reinvigorated under new ownership in 2019, the company provides CNC and manual machining along with supporting services and customizable stocking programs. Summit is ISO 9001:2015 certified without design, DDTC/ITAR registered, and registered with the United States/Canada Joint Certification Office.
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DDTC/ITAR Registration
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United States/Canada Joint Certification Office Registration
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NIST Traceable Calibration
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Center-Line Machining LLCFamily-owned and operated since 2007, Center-Line Machining produces custom precision-machined components from its Mentor, Ohio shop. Its experienced machinists, engineers, and programmers handle projects from prototype through production, with in-house CNC turning and milling supported by detailed inspection and approved outside services. Center-Line is ITAR compliant, ISO 9001:2015 compliant, and AS9100D compliant.MENTOR, OH
Detailed Machining IncFounded by John Bertsch in a one-door Sidney, Ohio garage in 1997, Detailed Machining Inc. has grown into a full-service machine shop producing custom parts and production runs for customers across a range of industries. The company now operates a 42,000-square-foot job shop with more than 25 employees, while retaining the walk-in, service-oriented approach that shaped its early work for local fabricators. Detailed Machining is ISO 9001:2015 certified and supports projects from rapid prototypes to larger-scale manufacturing.SIDNEY, OH
Standby Screw Machine Products CoFounded in Cleveland in 1939, Standby Screw Machine Products makes custom precision-machined parts for customers ranging from automotive manufacturers to equipment makers. Still privately owned and operated by the Marcell family, the company has grown from two screw machines into a 200,000-square-foot, three-facility operation with 300 employees worldwide. Its Berea, Ohio plant and overseas facilities are ISO 9001:2015 registered, supporting both prototype work and high-volume production.BEREA, OH
Proficient Machining CoEstablished in 1973, family-owned Proficient Machining Co. makes precision CNC-machined and screw-machine parts for customers across industries including aerospace, medical, nuclear, and automotive. The Mentor, Ohio manufacturer combines a long-tenured workforce—with many employees staying 20 to 30 years—with capabilities ranging from one-piece prototypes to high-volume production. Its quality system is ISO 9001:2015 certified.MENTOR, OH