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Thread: Bolt Modification Fixture

  1. #1
    Supporting Member jjr2001's Avatar
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    jjr2001's Tools

    Bolt Modification Fixture

    If you ever needed a dog point screw, a pointed set screw, or even just a flat end screw
    then this is a handy adapter that can get the job done in a 3 jaw chuck.

    Make up several Screw Bushings before tapping the 10-32 set screw holes.
    Use the housing as a drilling guide for all the bushings before tapping the set screw holes.
    The bushing should be a slip fit into the Housing for best operation.
    1/2-20 Bolt and Nut may either be turned round and knurled or just drill the hex heads
    for a .187 Tommy bar. They can even be left as is and just use a wrench. Very light pressure
    so you do not push hard on the Screw Bushing.

    I leave drilling /reaming the Screw Bushings until I know what size screw it will be used for.

    I used another accessory to flatten the end of the 1/2-20 bolt. I needed a true surface on
    the end of the bolt and did not want it dished. Here is the link to the build thread for that tool.
    Lathe Chuck Adapter for holding Bolts on Sherline, 100mm and 125mm Prints Included

    And yet another Bolt modification tool. The Lantern Chuck.
    Lantern Chuck AKA Screw modification chuck
    Attached Thumbnails Attached Thumbnails Bolt Modification Fixture-img_3352.jpg   Bolt Modification Fixture-img_3353.jpg   Bolt Modification Fixture-screwmodchuck.jpg  
    Attached Files Attached Files
    Download plans for milling tools.
    Back to the shop.

  2. The Following 3 Users Say Thank You to jjr2001 For This Useful Post:

    emu roo (Nov 13, 2024), Jon (Nov 13, 2024), Saltfever (Nov 14, 2024)

  3. #2
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    Shelly142's Tools
    jjr2001,
    Nicely done, simple design but very effective tool.
    Shelly142
    Download plans for milling tools.

  4. The Following User Says Thank You to Shelly142 For This Useful Post:

    jjr2001 (Nov 13, 2024)

  5. #3
    Supporting Member jjr2001's Avatar
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    Thanks Shelly, It was easier to make than the lantern tool and is even more accurate.
    Back to the shop.

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    Thanks jjr2001! We've added your Bolt Modification Fixture to our Fastening category,
    as well as to your builder page: jjr2001's Homemade Tools. Your receipt:





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