Electrode – Electrodes vary greatly depending on the job being performed. Every EDM job has two electrodes, the first being the workpiece which must be a conductive metal. The second being the thin wire of the EDM machine. This electrode can be hollow for small hole EDM, contain multiple chambers for RAM EDM, or solid wire for standard EDM. Most electrodes are made of brass or copper. Brass electrodes should not be used when cutting tungsten, carbide, or exotic materials.
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