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Thread: shrinking disc

  1. #1
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
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    3,718

    Default shrinking disc

    A tool panelbeaters use, a disc mounted on a angle grinder. Would it be possible to make a disc out of stainless, rather than buying one ? They are not cheap to buy . The friction heats up the area to be shrunk , usually a spray of water is used .

  2. #2
    Join Date
    Nov 2017
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    Geelong, Australia
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    57
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    2,651

    Default

    I can't see why not.
    They are ~1.6mm stainless according to this:

    https://www.autobodytoolmart.com/shr...s-p-15602.aspx

    Steve

  3. #3
    Join Date
    Nov 2017
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    Geelong, Australia
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    Default

    The commercial ones look like they are pressed out of sheet, but I reckon it would be hard to get that outer flange formed nicely and keep the face flat fabricating one yourself. I don't think the thickness is critical, more that they form them out of 1.6mm for manufacturing reasons.

    I think it might be easier to turn one up out of plate. Probably 6 or 8mm would be thick enough to get a similar radius on the edge as what the commercial ones have, recess the center for the flange nut and just leave the rest original thickness.

    Steve

  4. #4
    Join Date
    Jan 2004
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    Mackay North Qld
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  5. #5
    Join Date
    Sep 2012
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    York, North Yorkshire UK
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    Default

    Shudder ! No guard He's lucky he still has fingers.
    Best Regards:
    Baron J.

  6. #6
    Join Date
    Jan 2004
    Location
    Mackay North Qld
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    6,446

    Default

    Common sense should have told him that the 4" grinder was too small for the disc.

    The other way would have been to extend the A/G handle.

    Common sense is not always common.

    Grahame

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