A form of subtractive manufacturing where a metal part is placed into a dielectric liquid and an electrode is placed very close to the part. A current is placed on the electrode and the part, and the current passes through the dielectric liquid, creating an electric arc. The electric arc erodes material from both the electrode and the part. The electrode is pushed into the part, removing material as it goes.
The electrode can be a solid shape that is plunged into the part, creating a feature shaped like the probe, or a wire that is used to slice through the part.
In additive manufacturing, wire EDM is often used to remove supports and the build plate from parts created with metal powder bed fusion.
Abbreviated as EDM.
Categories: Post-Processing
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