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Wire EDM and sinker EDM for hardened materials and complex geometries. Machine what others can't with electrical discharge technology.
Precision cutting with brass or coated wire for 2D profiles, tapers up to 45°, and thicknesses up to 16".
Ram EDM for complex 3D cavities, blind features, and sharp internal corners in hardened materials.
Fast hole drilling from 0.012" to 0.250" diameter for start holes, cooling channels, and vent holes.
Connect with experienced shops equipped with modern EDM equipment
Southampton, MA
Max material hardness
Min corner radius
Mirror finish possible
Design Tip: EDM requires a conductive path, so include starter holes for wire EDM and consider electrode access for sinker EDM. Add 0.001-0.003" per side for finishing passes.
Note: EDM only works on electrically conductive materials. Non-conductive materials like plastics, ceramics, and glass cannot be EDM machined.
EDM (Electrical Discharge Machining) is a non-contact machining process that uses electrical sparks to erode material. It's ideal for hardened materials, complex shapes, and tight tolerances that are difficult or impossible to achieve with conventional machining.
Wire EDM uses a thin wire electrode to cut through material like a bandsaw, ideal for 2D profiles and through-holes. Sinker EDM (ram EDM) uses a shaped electrode to burn cavities into material, perfect for complex 3D shapes, blind features, and mold cavities.
EDM is slower than conventional machining but offers unmatched precision. Wire EDM typically cuts at 1-20 square inches per hour. Sinker EDM varies widely based on depth and complexity. Multiple passes improve finish but increase time.
EDM creates a small heat-affected zone (HAZ) called the recast layer, typically 0.0001-0.001" thick. This can be minimized with proper parameters and removed with finishing passes. The HAZ is much smaller than with laser or plasma cutting.
Wire EDM creates corners with a radius equal to the wire diameter plus spark gap (typically 0.005-0.010"). Sinker EDM can create sharp internal corners limited only by electrode manufacturing capabilities, often down to 0.001" radius.
Get competitive quotes from shops specializing in wire and sinker EDM. Perfect for hardened materials, tight tolerances, and complex geometries.