eBay

 Electric spark drilling machine Breaking tap tool electric pulse high frequency piercing machine screw drill blind hole sparking machine
e scription:
- Process range: Can take out the break off drill head, screw tap, bolt, reamer, plug guage from the workpiece.  Can processing a variety of electrically conductive materials like the hardened steel, cemented  carbide, copper etc.
- “SD” series high frequency electric spark machine use principle of electrolytic corrosion to take out break off cutter, no force or damage  on the workpiece.
- Two parts seperate disign, the working head can be adjusted in any direction.  it’s convenient for process different kinds of workpiece.
- Portable light weight, directly use water/electric spark liquid as working solution.
- Note: pls do not use the cutting fluid.

Specification:

Model BD-1000B
Voltage  input AC 220V
Power 1000W
Automatic  travel 100mm
Secondarytravel 400mm
Working type electrical pulse
Working  gears 6 gears(3 gears current/3 gears voltage adjust)
Process speed ≥1mm/min
Dimension 261*281*180mm;    200*55*430mm
Weight 18.3kg;    5.2kg
Total weight 24kg