While our facility is located in Channahon, Illinois our customer base encompasses the entire United States. High Performance CNC Machining  Specializing in molds, dies, fixtures parts.  Fastest turnaround in the state-of-the-art equipment and the expertise of dedicated craftsmen.  Definition of  Electrical Discharge Machining (EDM)  In the Electrical Discharge Machining process (EDM), metal is removed by generating high frequency sparks through a small gap filled with a dielectric fluid. This technique allows to machine complicated shapes in hard metals, including refractory alloys. A necessary condition for achieving a good surface finish is a well controlled gap between the electrode (tool) and the work piece. The sparking gap ranges from about 10 to 100 microns, respectively for finish and roughing.