Extrude Hone Corporation, located in Irwin, Pennsylvania invented and patented the Abrasive Flow Machining (AFM) process in 1966. This process, along with Electrolytic Machining (ECM) and Thermal Energy Method deburring (......Extrude Hone Corporation, located in Irwin, Pennsylvania invented and patented the Abrasive Flow Machining (AFM) process in 1966. This process, along with Electrolytic Machining (ECM) and Thermal Energy Method deburring (TEM), make up the core Extrude Hone finishing technologies. Extrude Hone provides these technologies to industry in the form of capital equipment and contract job shop services through our direct sales force and network of Contract Service Centers. Over the past four decades, Extrude Hone Corporation has grown into a world-class developer and supplier of advanced manufacturing processes, machine tools, and contract machining services for deburring, polishing, and surface finishing. We are a major provider of engineered finishing solutions to the automotive, aerospace, fluid power, food processing, semiconductor, medical, and mold & die industries worldwide. In March 2005, Extrude Hone became part of the Kennametal family of companies.