How Our EDM Machines Work for Your Molds
A key process for improving mold component quality.
Best for
Ribs, pockets, logos, sharp internal corners and local deep features on hardened mold steels.
Typical parts
Small core inserts, slide and lifter details, gate areas and repair of critical mold features.
Depth & complexity
Handles deep cavities and complex 3D shapes where milling and wire EDM cannot reach.
Accuracy & finish
Typical form accuracy within ±0.01 mm, with fine surfaces ready for polishing or texturing.
Workpiece range
From tiny inserts to medium-size components, suitable for localized EDM on hardened blocks.
Result
Stable, repeatable shapes with good surface quality and controlled heat-affected zones.
Typical parts
Mold plates, cavity and core inserts, ejector plates, spacer blocks and rails.
Fine details
Narrow clearance slots, thin ribs, small steps and complex outer profiles.
Accuracy & tolerance
Typical dimensional tolerances around ±0.005–0.01 mm on hardened mold steels.
Surface quality
Clean cut surfaces after skim cuts, suitable for fitting and further polishing.
Workpiece range
From small precision inserts to medium mold plates and frames in hardened condition.
Best for
Precision outer profiles and slots when you need high accuracy without distortion.
EDM & Machining Workshop Tour
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Wire EDM – Quality Checks
- Dimensional Accuracy – ±0.005–0.01 mm on hardened mold steels.
- Surface Finish – clean cut surfaces and Ra-controlled mating areas.
- Taper & Deformation – low taper and flatness on thick plates.
Sinker EDM – Quality Checks
- Cavity Size & Shape – deep cavities and steps checked to drawing.
- Sharp Corners & Radii – fine internal corners for ribs, pockets and logos.
- Fit & Assembly – trial fitting of inserts, sliders and guiding surfaces.