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Fuel Cell
Innovative Tool and Die Inc.
#17-7449 Hume Ave.
Delta, British Columbia
Canada V4G 1C3
Tel: (604) 946-1622
Fax: (604) 946-1567
EDM Machining What is EDM and why use it?
Why EDM?|Why choose us?

Electrical Discharge Machining or EDM is a non traditional method of removing metal by a series of rapidly reoccurring electric pulses which are discharged between an electrode and the work piece.

EDM is used to machine features that would be difficult or impossible with other techniques. Hardened steel and exotic alloys pose little or no additional challenge over softer work pieces.


  • Intricate & complex details are possible
  • Internal corners down to R .001" [.025mm]
  • Small features down to .004" [.10mm]
  • Extremely hard work pieces can be cut
  • Very high accuracy attainable
  • Precise control of surface finish
  • No cutting forces
  • Virtually no geometric limitations


  • Non conductive work piece’s cannot be cut
  • Slower material removal rate than milling
  • An electrode is required [Sinker EDM]


Examples of use

  • Cavity impressions for molds
  • Core ribbing details for molds
  • Raised or depressed engravings
  • Extrusion or punch die profiles
  • Pockets with square or sharp corners
  • Narrow (.012”) kerf thru cuts
  • Narrow (.005”) kerf thru cuts
  • Slots, keyways, square & hex drives
  • Gears, splines
  • Small or deep holes, especially in hardened
  • Removal of broken taps and drills
  • Hard tapping
  • Machining of carbide
  • Application of textured surface finish