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Thread: Lathe Chuck Anti-Spin Dog

  1. #1
    Supporting Member astroracer's Avatar
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    astroracer's Tools

    Lathe Chuck Anti-Spin Dog

    I have a need to drill some larger diameter holes in pieces set up in the lathe chuck. I use a drill chuck on a taper in the tailstock. Over the years I have spun the chuck on the taper a few times when the drill catches in the work piece. Not a good thing but what is a guy to do?
    I had that problem tonight drilling out some 5/8" nuts with a .6195 dia. drill. All the chuck wanted to do was spin. Especially when a little bit of chatter freed it up. I needed to fix this so I could finish a job.
    I dug thru one of my scrap aluminum drawers and came up with this... A slip collar from a computer shaft.

    It fit perfectly over the nose of my drill chuck.

    I thought oh man this is doable!
    I grabbed another piece of scrap aluminum. 3/16 thick, laid out a pattern off the top of my head and cut it out on the VBS. Smoothed it off with a flap disc and some ScotchBrite and here it is.

    Drilled and tapped three holes in the collar and dog and bolted them together.

    See next post

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  2. The Following 3 Users Say Thank You to astroracer For This Useful Post:

    Hotz (Jun 12, 2015), Jon (Jun 11, 2015), kbalch (Jun 15, 2015)

  3. #2
    Supporting Member astroracer's Avatar
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    astroracer's Tools
    The dog worked like a charm, I got the nuts drilled out without a hitch (or a spinning chuck) and was pretty pleased with the work I did tonight.




    These were the pieces I was drilling out. Made them a heavy slip fit over the bolt to use as axles for a wagon I am building


    Mark

  4. The Following 4 Users Say Thank You to astroracer For This Useful Post:

    Hotz (Jun 12, 2015), Jon (Jun 11, 2015), Paul Jones (Jun 11, 2015), PJs (Jun 16, 2015)

  5. #3
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    Good idea, astroracer! Thanks for posting.

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    kbalch's Avatar
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    Thanks Mark! I've added your Lathe Chuck Anti-Spin Dog to our Lathe Accessories category, as well as to your builder page: astroracer's Homemade Tools. Your receipt:




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