Bill Freeman wrote:

EDM is Electron Discharge Machining.  Elec discharges from the
cutting tool 'etch' away the the workpiece.  Wire EDM uses a
tightly stretched wire to "bandsaw" thru any metal, no cutting
distortion, since there is no load.  The cutter (wire)  is consumed
also, so the wire moves from one reel to another, distributing the
wear.  Can cut extremely hard materials easily, no distortion,
very little heating.

Bill

 
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