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IndustryArena Forum > CNC Plasma, EDM / Waterjet Machines > General EDM Discussion > Need help on workholding pins for sinker EDM
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  1. #1
    Join Date
    Oct 2008

    Need help on workholding pins for sinker EDM

    Hey guys, I run some sinker cnc edm machines for a mold making company and recently had to burn several pins that were difficult to hold.
    They were made from ejector pins, so they had the head on them, were .976 long OAL, with a burn depth from the small end of .320

    We didn't have any V-blocks thin enough to account for the head diameter, so we wired out a small V spacer.

    I need to find/make something that can hold 4 pins at a time to burn these. We do have a wire machine so that's an option.

    Do you guys have any ideas?


  2. #2
    Join Date
    Jan 2010
    The way we did stuff like this, was to make a block that had holes through it and a counter bore for the heads. The block would then be clamped to the table to capture the heads, letting the pin to be machined.

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