Open Source Die-Sink EDM Machine

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Used For

  • Mold Making
  • Die Making
  • Machining Difficult Metals Like Tungsten
  • Hole Drilling (Especially of very small holes, or on difficult materials and/or geometries (such as drilling through a sphere) )
  • All of this with very high tolerances

Industry Standards

MC Machinery



Existing Open Source Designs

  • PS Eric Here, there are many designs so I just put these 3, Feel Free to Add More

Hackaday Article

Dedicated DIY EBM Website

Instructable 1

"Applied Science" 's Video + Design

Minimum Viable Product

Basic Design


  • Holds all the below together


  • Controlls all components
  • Rasberry Pi + Arduino + Any neccissary sheilds?
  • Connects to IO Panel and any external controls (PC, Server, WWW, etc)

IO Panel

  • Touchscreen
  • Optional Mouse + Keyboard

Fluid Pump

  • Recirculats the dielectric fluid
  • Does this to promote circulation
  • Also provides pressure to debris clearing jets

Fluid Filter

  • Cleans Debris (Such as Metal Dust) Out of the Dielectric Fluid
  • Hydrocyclone + Standard Oil/Water Filter Cartridge
  • Should also include sensors before and after filtration to determine fluid + filter effectiveness

Work Surface

  • The Workpiece is attached to this

Fluid Bath

  • Allows the Work Surface and Work Piece to be submerged in dielectric fluid
  • Could be permanent or a slide up design

CNC Gantry

  • Holds and Moves the Toolpiece
  • Standard D3D Axis?


  • A Hollow Cylender (Similar to a drill chuck) that allows various sinkers to be attached
  • Works with the power supply
  • Quickchange optionally

Fluid Resevoir

  • Holds Spare Fluid
  • Also holds the contents of the fluid bath when not in use

Fluid Filter

  • Filters out the debry from machining (Such as various metal dusts and chemical powders created
  • Then Keeps the fluid at the sort of "Goldylocks" like position between deionized and tap water (Most likely using a PEM and/or a dillute and dump (Add in DIW dump out some of the "spent" fluid)
  • Will also need sonsors to monitor that it is working effectively


See Also

Useful Links