Due to the ongoing working requirements of machining with close tolerances and hardened materials, Wire EDM is the only way to hold form and tolerance without work hardening or deforming a delicate part.
Wire EDM is a method to cut conductive material with a thin wire. Wire diameters range from .004" - .012" although small and larger diameters are available. There is no physical contact with the wire and the part. Rather, the wire is charged to a voltage very rapidly. It's the electrical charge or spark that is actually cutting the material.
Most Wire EDM equipment can independently move on (4) axis to generate taper cuts. This process is mainly used in cutting die or extrusion molds. Wire EDM can be accurate to +/- .0001" with no burrs because there is no actual cutting force against the material.
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