![]() Similar to the other EDM types, the electrode cuts/erodes the workpiece, but due to the discharged gap, the electrode doesn’t actually contact the workpiece. In this process, the electrodes are tubular and the dielectric fluid is fed through them. Additionally, hole drilling EDM is super clean, and doesn’t require any deburring. Hole drilling EDM is able to machine very small, deep holes, which is difficult or even impossible with conventional drilling methods.
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