Check out these electrical discharge machining images:
The Intellectual Ventures Lab machine shop, 6,000 square feet of cutting-edge fabrication technology: “computer-controlled mills and lathes, welding gear, laser cutters, a high-pressure water-jet cutter, electrical discharge machining tools, precision grinding and sheet metal tools, and 3D printers.”
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Image by hhjjj
EDM (Electrical Discharging Machine) shop for mold producing.