Tech Talk
What is "EDM - Formed Electrode"?
A process using a shaped electrode made from carbon or copper. The electrode is separated by a nonconductive liquid and maintained at a close distance (about 0.001"). A high DC voltage is pulsed to the electrode and jumps to the conductive workpiece. The resulting sparks erode the workpiece and generate a cavity in the reverse shape of the electrode, or a throughhole in the case of a plain electrode. Permits machining shapes to tight accuracies without the internal stresses conventional machining often generates. Also known as "die-sinker" or "sinker" electrical-discharge machining.
