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  1. #1
    Join Date
    Feb 2013
    Location
    Laidley, SE Qld
    Posts
    1,038

    Default Aldi LED BBQ light

    From time to time, like most on here I suspect, I need to alter the head of a hex head bolt or cap screw. The easiest method I've found of holding the bolt is to grab it by the threads in an ER collet, it doesn't damage the threads and there is no slippage.
    In the photos you see a round ER32 collet block in the 3 jaw chuck, and I'm reducing the head of a stainless steel 3/8" countersunk cap screw.

    IMG_2984.jpg

    IMG_2985.jpg

  2. #2
    Join Date
    May 2019
    Location
    Tucson, Arizona, USA
    Posts
    46

    Default

    I have grabbed it with a nice 3 jaw chuck and it worked fine for me. You method looks more precise.
    David

  3. #3
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,541

    Default

    I think it depends on the chuck (and the thread). My main 3 jaw has aggressive serrations on it so that half the time the screw turns in it like a nut.

    Michael

  4. #4
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Guys,

    A trick I often use is to put the screw in a split die and grip the die in the chuck. I used the same method to drill oil holes in M6 CSK hex screws recently.
    Best Regards:
    Baron J.

  5. #5
    Join Date
    Mar 2009
    Location
    Melbourne
    Age
    54
    Posts
    825

    Default

    Another quick and dirty method is to cut a matching nut along it's length, screw this onto the bolt you need to turn and clamp onto the nut in the three jaw. The slit allows the nut to act a bit like a collet. When you're done, chuck the nut in a box for next time and you end up with a bit of a collection.
    Cheers,
    Greg.

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