EDM / Wire EDM
Electrical discharge machining for hardened steels, complex cavities, and razor-sharp internal corners that conventional milling cannot reach.
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Sinker EDM
Complex 3D cavities, mould cores, and die-sinking. Graphite or copper electrodes shaped to the inverse of your feature.
Wire EDM
0.1–0.3 mm brass wire cuts contours through any conductive material, regardless of hardness. Ideal for punch blanks and gears.
Micro EDM
Electrodes down to 0.05 mm diameter for fuel injector nozzles, watch parts, and MEMS components.
No Heat-Affected Zone
Spark erosion produces minimal thermal stress — no distortion in hardened tool steels or thin-walled sections.
Materials
Hardened punches, dies, and mould inserts up to HRC 60
Wear parts, drawing dies, nozzles
Aerospace parts with complex cooling holes
Surgical instruments, food-grade tooling
EDM electrodes and high-conductivity contacts
If it conducts electricity, we can EDM it
Tolerances & Specs
| Specification | Wire EDM | Sinker EDM |
|---|---|---|
| Positional accuracy | ±0.003 mm | ±0.005 mm |
| Surface roughness | Ra 0.4 μm | Ra 0.2 μm |
| Min. corner radius | 0.07 mm | 0.1 mm |
| Max. workpiece height | 300 mm | 400 mm |
| Hardness limit | Any | Any |
FAQ
EDM requires electrical conductivity. For ceramics or plastics, consider laser cutting or waterjet instead.
Yes — because there is no cutting force, EDM excels at thin walls and delicate features that milling would deflect or break.
Finish EDM passes achieve Ra 0.2 μm, approaching ground quality. A skim-cut EDM can replace many grinding operations.