National Diamond Tool and Coating is a family-owned Westlake, Ohio manufacturer of custom PCD and CBN tooling, with diamond-tipped tools made in the USA at its 20,000-square-foot facility. Founded in 1994 by Thomas Abersold, the company remains under family leadership, with his son Bill serving as president since 2017. Alongside custom manufacturing, it repairs and retips tools from other manufacturers and provides diamond coating services for demanding machining applications.
Ohio Drill & Tool CompanyOhio Drill & Tool Company has been manufacturing precision-ground drills and cutting tools in the same Homeworth location since 1948. Founded by George and Helen Sanor as a basement maker of ballpoint-pen drill bits, the family-owned business now spans three generations and continues to make its tools in the USA. Its work is built around precise workmanship, personal service, and dependable order fulfillment.HOMEWORTH, OH
West Ohio Tool CoBorn in a Russells Point garage in 1989, West Ohio Tool Co. now manufactures custom carbide, PCD and CBN cutting tools for demanding work across automotive, aerospace and other mission-critical industries. The family-founded company is best known for its EDGEX4® PCD-brazed drilling solution, developed through years of testing and demonstrated to reach up to one million holes in die-cast aluminum. Its 20,000-square-foot operation combines hands-on engineering support with automated grinding and erosion equipment, and operates under ISO 9001:2015 and AS9100 certification.RUSSELLS POINT, OH
H3D Tool CorpFounded in Newcomerstown, Ohio, in 1968 as Herco, H3D Tool Corp designs and manufactures custom cutting tools for woodworking and precision metalworking. The Dyer family’s 1993 3-D Diamond Tooling venture and the 2008 merger that created H3D expanded the company into PCD diamond tooling, insert tooling, tool rebuilding and precision-machined components. Today, its Ohio and North Carolina manufacturing locations support custom work from reverse-engineered profiles to specialized cutterheads, including the quick-change Terminus and dynamically balanced HelixHead lines.NEWCOMERSTOWN, OH
Hewlett ManufacturingFor more than 60 years, Hewlett Manufacturing of Linesville, Pennsylvania, has made diamond-coated sharpening tools, including the original oval diamond steel perfected by founder Harlan D. Hewlett. The family business grew from OEM manufacturing into the JewelStik® brand and supplies sharpening tools to established knife companies while producing its products in the USA for home, shop, and professional use.LINESVILLE, PA