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Thread: EDM (electric discharge machining) Machine

  1. #11

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    Mar 2017
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    During my apprenticeship as a Fitter and Turner we used EDMs to form forging dies, a carbon electrode was copied of the plaster master and then burnt into the blocks of tool steel, we also used copper wire for removing broken drills etc. The coolant we used was a mixture of kero and light oil.

  2. #12
    olderdan's Avatar
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    Jun 2016
    Devon UK
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    olderdan's Tools
    Congratulations Scorch,
    I have operated EDM machines wire and sink but never thought a home made one was possible especially from used parts. As for uses we used to erode out sheared studs from engine parts and also erode holes in hard steels with no loss of hardness.

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