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  1. #1
    All great ideas but I have to be quite accurate with the holes, after marking them out then drilling chances are they won’t be that accurate. The PCB has about 5 mounted parts that need to go through the holes on different sides and there’s no play. Plus they have to be neat. So that’s why Im thinking of making a template I can slip over the edge of the tin box, sort of an inverted U shape and then using a hardened bolt that’s been cut down with a cutting edge done on a lathe that then screws through the die and punches out the holes.

    Fiction is far more plausible when wrapped around a thread of truth

    Nothing great was ever achieved without enthusiasm.
    Ralph Waldo Emerson


  2. #2
    A bit like these:-
    Q.max Sheet Metal Hole Punch 25mm
    But I don't think they are made down to 5mm. ...Clive

  3. The Following User Says Thank You to Clive S For This Useful Post:


  4. #3

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  6. #4
    Quote Originally Posted by Clive S View Post
    A bit like these:-
    Q.max Sheet Metal Hole Punch 25mm
    But I don't think they are made down to 5mm. ...Clive
    Hit the nail on the head Clive .. same idea but a rectangle block that fits over the tins side :)

    Wish I had seen this ages ago wouldnt have struggled with those crappy paper punches :) thanks Cropwell
    Last edited by Fivetide; 01-07-2013 at 08:47 PM.

    Fiction is far more plausible when wrapped around a thread of truth

    Nothing great was ever achieved without enthusiasm.
    Ralph Waldo Emerson


  7. #5
    Easy enough to make your own punches and dies using something like EN8. Heat to cherry red and quench in oil to harden. It's about time you built a CNC punching machine.

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