Family-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.
ITAR Compliant
Compliance program
ISO 9001:2015 Compliant
AS9100D Compliant
AS9100 Certification
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.png/:/cr=t:0%25,l:0%25,w:100%25,h:100%25/rs=w:1240,h:620,cg:true)
Summit Machining Co LtdSummit 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.MOGADORE, OH
Total ManufacturingSince 1986, privately owned Total Manufacturing has made precision-machined metal components and custom fabrications in Mentor, Ohio, serving rapid-prototype and small- to medium-volume production needs. Its 90,000-square-foot facility can take on both intricate parts and large structures, including machine frames and stands, while its team’s average tenure of more than 20 years brings substantial shop-floor experience. The company also produces components for Navy nuclear applications and maintains ISO, ITAR, and Joint Certification Program credentials.MENTOR, OH
Triangle Machine ProductsFamily-owned and operated for four generations, Triangle Machine Products has remained in business since 1957, building its reputation on integrity, common sense, and hard work. From its 47,000-square-foot Cleveland-area facility, the company makes precision CNC-turned components for OEMs and other manufacturers, supporting both prototype work and high-volume production. Triangle employs 40 people and holds ISO 9001:2015 and IATF 16949:2016 certifications.CLEVELAND, OH