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  1. #1
    Join Date
    Apr 2019
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    Finland
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    44
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    117

    Default Simple bench grinder modification

    Hi
    I bought a bench grinder from a flea market couple years ago.

    It was little bad condition, and i usually doesn't even use rough wheels for grinding.

    I had more use for a finishing machine, so i made this simple mod to it. Big wheel on the right side, is scotch brite polishing wheel.



    Originally it had been similar than this:



    Picture is from the internet, mine was missing some parts.

    Video about the process:

    Attachments Pending Approval Attachments Pending Approval

  2. #2
    Join Date
    Nov 2007
    Location
    melbourne australia
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    2,933

    Default

    A 5mm hole for a ⅜" tap?
    Chris

  3. #3
    Join Date
    Apr 2019
    Location
    Finland
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    Default

    Quote Originally Posted by jack620 View Post
    A 5mm hole for a ⅜" tap?

    Whoops. Actual thread size in chuck is 1/4-20. I allways mix those. Specially easily when video editing is made week after actual making process.

    Most likely reason was, that i needed to make a new thread to pipe, and searched3/8" - 18 NPT taper thread die with google meanwhile video editing software was rendering video clips.

  4. #4
    BobL is online now Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    6,517

    Default

    I squirmed a bit when I saw the tap continually spinning in the drill chuck. That looks like a good way to damage the chuck jaws.

  5. #5
    Join Date
    Apr 2019
    Location
    Finland
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    Default

    Quote Originally Posted by BobL View Post
    I squirmed a bit when I saw the tap continually spinning in the drill chuck. That looks like a good way to damage the chuck jaws.
    Yep. That happens to me too, specially when it keeps that squeky sound.

    I use mostly that old Milwaukee for that purpose, and it can be seen that it doesn't hold very well anymore. ( What's good for tapping ) But, that's the price i need to pay.

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