EDM Sinker

Sinker EDM, Conventional EDM, Ram EDM, Plunge EDM and Die-Sinker are all one in the same. This process uses custom machined electrodes that produce sparks alongside the surface of the electrode to machine, sink or plunge the cavity. The Sinker EDM process is ideal for a wide variety of applications, such as:

  • Blind cavities
  • Tolerances can be held to .0001”
  • Complex details
  • Sharp corners
  • Fine finishes (surface finishes to 10 micro-inch)
  • Thin walls
  • Blind keyways
  • Internal splines, squares, or hexes
  • Tooling
EDM Sinker