tube material for hole popper EDM
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  1. #1
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    Default tube material for hole popper EDM

    Hello all,

    I am fairly new to the EDM hole popper world, so bear with me. I started using brass tubes, burning mainly starter holes for my wire EDM. Someone suggested copper tubes; they seemed to work as well, if not better. Now I read somewhere about copper/tungsten tubes....I haven't explored them as of yet; does anyone have any words of wisdom...pertaining to this subject ?? The work material is silicon carbide ceramics, mainly.

    Thanks,
    Mark

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    Brass is the standard but experiment with different materials and see what works best for you. Maybe get in touch with a specialty company and pick their brains, maybe get some samples to try.

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    Copper is for carbide drilling, but from my experience it does nothing for other materials.
    Never tried tungsten, but when I've asked my supplier I was told that those are for sinker edm burning and not hole poppers.

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    Our Sodick hole popper uses nothing but copper, we cut with rods in range of 0.6 - 2.5mm.

    In good conditions I’m cutting a 10-20mm per minute in steel of the top of my head, could be more in steel, and then even faster in Aluminium and brass.


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