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Electrical discharge machining (EDM) is a process of metal machining also referred to as spark machining, spark eroding, burning, die sinking, is a manufacting process whereby a desired shape is obtained using electrical discharges (sparks). Material is removed from the work piece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject to an electric voltage. A non-conventional process, EDM works on parts resistant to conventional, machining processes, but only if these parts are electrically conductive; usually, they include steel titanium, super alloys, aluminum, brass, and many other metals. Instead of cutting the material, EDM melts of vaporizes it, leaving little debris and providing a very accurate line. industry-wide acceptance has led to a wide variety of EDM applications, as it is highly veratile, can cut hard metals. Electrodes are usually manufactured out of Copper or Graphite utilizing our CNC machines. We have 3 EDM machines in Ceejay Precision Engineeing.