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Thread: QCTP knurling holder fix

  1. #1
    Supporting Member Cascao's Avatar
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    Thumbs up QCTP knurling holder fix

    After great results in my clamp style knurling tool and Bump straight knurling tool I was riled with the poor results I had with QCTP 110 tool (knurling and facing tool holder).


    The material used


    Checking if idea will work...


    "Milling" the round slot in four jaw chuck.


    Tool ready for test run


    Done!

  2. The Following 17 Users Say Thank You to Cascao For This Useful Post:

    aphilipmarcou (Jan 24, 2018), baja (Feb 28, 2020), benkeller3 (Feb 28, 2020), blkadder (Jan 22, 2018), emu roo (Aug 27, 2025), jjr2001 (Jan 22, 2018), Jon (Jan 22, 2018), mwmkravchenko (Jan 22, 2018), olderdan (Jan 22, 2018), Paul Jones (Jan 22, 2018), piper184 (Aug 27, 2025), PJs (Jan 23, 2018), Seedtick (Jan 22, 2018), Sleykin (Nov 8, 2022), ta2ad (Jan 31, 2022), tonyfoale (Jan 22, 2018), Tule (Feb 28, 2020)

  3. #2
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    Great re-engineering, Cascao!

    i have one of those terrible bump knurlers, and now i realize there is hope for it. On my build list!

    Thanks!

    Bob

  4. The Following 5 Users Say Thank You to rebuilder1954 For This Useful Post:

    bvd1940 (Jan 22, 2018), Cascao (Jan 22, 2018), Eaglewood (Jul 2, 2024), Paul Jones (Jan 22, 2018), t24 (Jan 22, 2018)

  5. #3
    Supporting Member Cascao's Avatar
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    ...or you can replace the knurls with one bearing and make a bump tool
    .

  6. The Following 3 Users Say Thank You to Cascao For This Useful Post:

    blkadder (Feb 27, 2020), emu roo (Aug 27, 2025), luvmygto (Jan 31, 2022)

  7. #4
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    Thanks Cascao! We've added your Knurling Holder Modification to our Metalworking category,
    as well as to your builder page: Cascao's Homemade Tools. Your receipt:






    2,500+ Tool Plans
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  8. The Following 2 Users Say Thank You to DIYer For This Useful Post:

    Cascao (Jan 29, 2018), emu roo (Aug 27, 2025)

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