a process of manufacturing spark erosion electrode particularly pertaining to electrode in wire form , for use in electrical discharge machining , the core of the electrode being of comparatively low zinc alpha brass with top layer of highly rich zinc beta and gama brass to facilitate better flashability of the electro - erosion process , and also to achieve comparatively higher tensile strength of the core material of the electrode , whereby relatively higher accurate vertical cut of the workpiece is possible , due to reduction of amplitude of high tension vibration of the core while cutting workpiece by electro discharge machining process .