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  1. #16
    Join Date
    Oct 2011
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    Norwood-ish, Adelaide
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    59
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    Quote Originally Posted by eskimo View Post
    ...but when a mate of mine retired he gave me 2 new m12 gun taps, along with some other used and new taps...i think these are suitable are they not?
    I think so, yes. Spiral taps push the chips out the top of the hole and gun taps push them through. The gun taps should be fine if the holes are through.
    Remember the trefolex/ lube too.

    Michael

  2. #17
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
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    Quote Originally Posted by Michael G View Post
    I think so, yes. Spiral taps push the chips out the top of the hole and gun taps push them through. The gun taps should be fine if the holes are through.
    Remember the trefolex/ lube too.

    Michael
    Okay in to do on the mill....or should i use dp?

  3. #18
    Join Date
    Oct 2011
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    Norwood-ish, Adelaide
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    Better in a drill press - the quill is the important part. But - an M12 tap is a sturdy beast. Perhaps try it in a soft material (AL?) and see how it goes.

    Michael

  4. #19
    Join Date
    Aug 2006
    Location
    Melbourne
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    1,105

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    Never seen one used with a die before only taps, did you make that up or is this fairly common?

    Quote Originally Posted by .RC. View Post

  5. #20
    Join Date
    Oct 2008
    Location
    N.W.Tasmania
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    [QUOTE=eskimo;1959419]
    Quote Originally Posted by Michael G View Post
    I have a M12 spiral tap you can borrow. You should not use a straight flute tap as there is a risk it will jam with the chips in the flutes.
    Use is simple - mount it in the drill press and use it as you would a drill. When you are at depth, release the handle and this should put the tapping head in reverse, where it will back out of the hole.
    And repeat...

    Michael[/QUOTe

    Tks Michael...but when a mate of mine retired he gave me 2 new m12 gun taps, along with some other used and new taps...i think these are suitable are they not?
    They should be ok if the holes are through holes, but if they are blind holes you will need a spiral flute tap.

    Sorry but didn't notice that there was a second page of postings, and that I was waaaay two late with my post.
    Last edited by Ropetangler; 2nd Dec 2019 at 10:00 PM. Reason: Didn't see the second page of postings.

  6. #21
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
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    4,255

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    Used the tapping chuck with 10mm spiral flute tap.
    The waldown has a VSD so I started off slow.

    motor kept stalling.....so changed pulley ratio to get extra torque with less spindle rpm.

    This tapping chuck is certainly going to get used more often...it worked a treat....

  7. #22
    Join Date
    Jul 2006
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    Athelstone, SA 5076
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    Finished the plate.

    [ATTACH=CONFIG]383569[/ATTAC

    Hardest part was tapping all the holes...after all i had to move the table 50mm in x&y axis for every hole. Gee these tapping chucks are bloody great!!!!.
    Attached Images Attached Images

  8. #23
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
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    6,439

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    Hi Guys,

    I have a small 1/4" inch capacity "Archer" tapping chuck that I managed to jam and broke one of the internal gear shafts. Its been hidden in a box for a good number of years. I'll have to dig it out and repair it. I gave away its big brother with a 3 MT arbour and 5/8" capacity, having never used it. I had a die holder for the big one, but I might have given that away as well.
    Best Regards:
    Baron J.

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