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Thread: drilling welds and cutting panels

  1. #21
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    Nov 2008
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    Quote Originally Posted by Brian Hjelm View Post
    Come in 8.0mm & 6.5mm diameter.
    What is diameter of spot welds on our Landies? Are we trying to cut exact diameter of weld or just outside it?

  2. #22
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    Feb 2008
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    welds

    Hi
    the cutter has to cut a track just larger than the spot weld.
    If too small you will leave some of the weld till attached
    just cut through enough to allow the cut piece to come free.
    do not cut too far into the back sheet, so not weaken it.
    cheers
    Ian

  3. #23
    Join Date
    Dec 2006
    Location
    Narrogin WA
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    Quote Originally Posted by Brian Hjelm View Post
    Use kerosene as a cutting fluid on aluminium. Stops chips welding to the cutting tool. Normal practice in machine shops.
    I have used kerosene in the past but dislike it due to the smell and fire risk.

    "Fitting and Machining", TAFE Publications, 2009, specifies kerosene or soluble oil.

    I haven't had any adverse issues with soluble oil,

    Cheers Charlie

  4. #24
    Join Date
    Nov 2006
    Location
    Wollongong NSW
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    The spot welds on the early Land Rovers are generaly
    a bit bigger than todays welds.
    25/64 or there abouts works well
    I never use any coolant as it makes a mess.
    Generaly you are only drilling through panel material and
    is very quick so it don't generate mutch heat
    It is very Quick so you have to be carefull or oops you go through
    Easy to do.......Mark

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