Electrical Discharge Machine (EDM), EDM Committed to providing our clients with the most leading edge technology, Wauseon Machine offers advanced Electrical Discharge Machining (EDM machining) services that allow us to create intricate and difficult to machine. Die-sinking EDM, also called cavity type EDM or volume EDM, it offers several different views of the burn process, including display of the rough machined stock, the electrodes, and the burn material. It is one of the most accurate manufacturing processes available; EDM machining can form complex geometrics and delicate profiles within parts, while meeting ultra tolerances.