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Thread: Small parts clamping fixtures

  1. #1
    threesixesinarow's Avatar
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    Small parts clamping fixtures

    Small parts clamping fixtures-01_hmt_clamps.jpg

    Here are three fixtures I use to hold small parts for machining additional features. They use different kinds of home made clamps.


    Small parts clamping fixtures-02_watchmakerlathewithslottingattachment.jpgSmall parts clamping fixtures-03_slottingattachmentdrawing.jpgSmall parts clamping fixtures-04_1904bscatp202screwslottingdevice.jpg


    The hinged clamp is for holding screws on the rocker slide for slotting on my lathe. It has easy-to-make replaceable jaws so I can clamp different diameters up to about 3/8”.

    It doesn’t lock and just works by leverage by feeding the slide upwards with one hand and pressing the top jaw down with the other.


    Small parts clamping fixtures-05_horizontaldrillwithtoggleclamp.jpgSmall parts clamping fixtures-06_toggleclampcableclamp.jpgSmall parts clamping fixtures-07_toggleclampdrawing.jpg


    The just-completed sideways toggle clamp is for holding round parts on a mill or drill press. It has the same kind of replaceable jaws as the slotting clamp.

    It works either with the regular handle, or with a foot pedal by hooking up the bicycle brake cable and engaging the torsion spring. The clamp has about 1/32” range of adjustment by rotating the eccentric toggle pivot pin that’s farthest to the right.


    Small parts clamping fixtures-08_routertablewithdoubletoggleclamp.jpgSmall parts clamping fixtures-09_doubletoggleclampdrawing.jpgSmall parts clamping fixtures-tctest.jpg


    The upright toggle clamp goes on the sliding table on my router. The angle iron base has a vertical fence for attaching temporary wooden fixtures, and this mounts to a slotted base plate that I tapped in lots of places.

    The clamp has a couple extra links in order to apply downward pressure along with the usual sideways force to position parts more consistently, as well as to keep them in place during upward plunge cuts, also operated by a foot pedal with a cable.
    Last edited by threesixesinarow; 07-04-2018 at 06:33 AM. Reason: Add diagram

  2. The Following 10 Users Say Thank You to threesixesinarow For This Useful Post:

    Captn Roy (07-03-2018), DIYer (07-05-2018), Jon (07-03-2018), LMMasterMariner (07-08-2018), NortonDommi (07-06-2018), philipUsesWood&Brass (07-04-2018), PJs (07-05-2018), rossbotics (07-04-2018), Seedtick (07-03-2018), thevillageinn (07-04-2018)

  3. #2
    rossbotics rossbotics's Avatar
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    Made a lot of those things over my years, great job

    Doug
    Comments are always welcome

    Doug

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    Content Editor DIYer's Avatar
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    Thanks threesixesinarow! We've added your Screw Slotting Fixture to our Lathe Accessories category,
    as well as to your builder page: threesixesinarow's Homemade Tools. Your receipt:




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    Thanks threesixesinarow! We've added your Sideways Toggle Clamp to our Clamps category,
    as well as to your builder page: threesixesinarow's Homemade Tools. Your receipt:




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    Thanks threesixesinarow! We've added your Upright Toggle Clamp to our Clamps category,
    as well as to your builder page: threesixesinarow's Homemade Tools. Your receipt:




  7. #6
    threesixesinarow's Avatar
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    threesixesinarow's Tools
    Thanks, Doug,

    That’s reassuring! I just figured I was missing something obvious when I couldn’t find more off-the-shelf solutions.

    Ones that fit, anyways!

    Nice job on your replacement jaws for the Craftsman vise - I need to copy them.

    Small parts clamping fixtures-78483243-c475-4bbb-ac20-b51338323a4c.jpg

    - Clark

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    PJs (07-05-2018)

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    Small parts clamping fixtures-5914365d-34c6-4a87-af9d-aac3a80c907e.jpg

    Pedal for the sideways clamp


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