EDM
Electrical discharge machining, or EDM, is a method of machining used primarily for exotic hard metals such as titanium, hastelloy, kovar, and inconel; in addition to commonly used tool steels and grades of sintered carbide. EDM centers are only able to machine materials that conduct electricity. EDM is also known as spark machining, spark eroding, burning, or sinking. Electrical arcs remove material via melting and evaporation via a wire in the case of Wire EDM. Sinker EDM (also known as Plunge EDM) utilizes graphite or copper electrodes for material removal. Wolverine Carbide and Tool offers both Sinker EDM and Wire EDM machining. With the ability to create complex shapes that many traditional machining processes are unable to achieve, EDM provides for extremely close tolerances with high quality surface finishes on a wide variety of sized pieces.