Supplier's Category: All Wire EDM (Electrical Discharge Machining): Spark erosion cutting for hardened metals and tight tolerances
Wire EDM cuts hardened metal using a thin charged wire that erodes material through electrical sparks rather than mechanical cutting force. It holds tight tolerances on hard materials and complex internal geometries that conventional machining can’t reach.
Wire EDM’s value is specifically for hard or geometrically complex features other processes can’t reach, so verify that’s actually what your part needs before specifying it.
- Confirm the part actually requires EDM — hardened material or an internal geometry conventional machining can’t cut
- Ask about achievable tolerance and surface finish on your specific material
- Check turnaround, since wire EDM is slower than conventional machining for comparable material removal
Related terms: wire EDM, sinker EDM, spark erosion machining, hardened tool steel machining, fine detail cutting, recast layer control, surface finish in EDM, electrode/wire material selection, tight-tolerance internal geometry
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Where wire EDM fits in a build
Wire EDM is typically used after heat treatment, specifically because it can cut material already hardened — most other processes need to cut before hardening.
Typical use cases
- Tooling and die components: precision features cut into hardened tool steel
- Complex internal geometries: shapes unreachable by a rotating cutting tool
- Low-stress, burr-free cutting: no mechanical force applied to delicate features