Electric discharge machining (EDM), sometimes also referred to as spark machining, spark eroding ,die sinking or wire erosion, is a manufacturing process whereby a desired shape is obtained using electrical discharges.  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.

SBOEVN are capable of producing tailored geometries on the ID or internals of collar components using our highly specialised EDM machine at essentially any depth within the tool, to an accuracy of hundredths of a millimeter