Wire EDM — for features no end mill can reach.
Wire EDM cuts hardened steel, carbide, and exotic alloys with no tool pressure and no heat-affected zone of consequence. Square internal corners. Tight kerf. Repeatable across full job. Aerospace and tooling work — quoted, scheduled, and costed live in K+G Ai ERP.
For geometry you can't mill and material you can't deflect.
Wire EDM uses an electrically charged wire (typically .010" brass) to erode material. No mechanical force on the part. Heat input is minimal and surface-localized — critical for hardened or pre-tempered material that machining would distort.
Hard materials
Tool steel after heat treat (52–65 HRC), carbide, Inconel, titanium. Cut the finished hardness — no second tempering cycle to chase tolerance.
Square internal corners
Wire radius drives inside-corner geometry. .010" wire produces a .005" corner radius. Far tighter than end mills can reach without prohibitive cycle times.
No-pressure machining
Thin webs, fragile features, delicate fixtures — wire EDM doesn't deflect the part. Ideal for stator/rotor laminations, surgical instruments, optics housings.
What gets cut on wire.
Typical wire-EDM workpieces span hardened tooling, aerospace stators, and intricate medical instruments. Click through to the related capability or material.
Sinker EDM
For deep cavities, blind holes, and internal sharp corners wire can't reach.
/ CapabilityCNC milling
Most parts combine milling (rough) with EDM (finish features).
/ MaterialHardened steel & carbide
Wire EDM's native home — cut after heat treat with no distortion.
/ IndustryAerospace
Turbine stators, structural inserts, mil-spec hardware.
Wire EDM questions, answered.
What materials can wire EDM cut?
Hardened tool steel, carbide, Inconel, titanium, hardened stainless, polycrystalline diamond, and tungsten. Anything conductive — including pre-hardened materials that would destroy a mill or grinder.
How tight can the kerf get?
Wire kerf is 0.010″–0.012″ standard, down to 0.004″ with fine wire. Internal corner radius matches the wire diameter — sharper than milling can deliver.
Is there a heat-affected zone to worry about?
Practically no HAZ of consequence. Wire EDM thermally removes material with no tool pressure and minimal recast layer — typically < 0.0001″ — which is why it's the standard for hardened aerospace and tooling work.
What positional accuracy do you hold?
±0.0001″ positional. Surface finish to 32 µin Ra standard, finer on multi-pass settings.
Typical applications for wire EDM?
Stamping dies, forming punches, aerospace blade locks, medical instrument keyways, broach inserts — anywhere the part is hardened or has square internal corners milling can't produce.
Send the print. Quote in 24 hours.
Wire EDM quotes need geometry + material + hardness state. STEP file + spec is ideal.