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Thread: A machinist's plumb bob

  1. #1
    Supporting Member mklotz's Avatar
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    Aug 2015
    LA, CA, USA
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    mklotz's Tools

    A machinist's plumb bob

    A machinist shouldn't be seen using a commercially puchased plumb bob so I made this one. Actually, it was made when I was starting out in the hobby and was a test piece to develop my skills.

    The body is solid brass and the replaceable tip (they often get damaged in use) is made of steel. The spherical end cap was made using my incremental technique of turning spheres (see the BALLCUT archive on my site).

    I wanted to be sure that the line supporting the bob couldn't influence the way it hangs so the line is tied to a pierced ball that rides in a conical depression inside the spherical end cap. Thus the bob is always free to hang perfectly vertical. In retrospect, given the weight of the final form, this feature is probably unnecessary but I always like to add something special to my designs.

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    Last edited by mklotz; Jul 7, 2017 at 09:21 AM.
    Regards, Marv

    Home Shop Freeware

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

    kbalch (Sep 8, 2015), PJs (Sep 9, 2015), Toolmaker51 (Sep 13, 2019)

  3. #2
    kbalch's Avatar
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    Jun 2012
    Clermont, FL
    Thanked 523 Times in 377 Posts
    Thanks Marv! I've added your Machinist's Plumb Bob to our Measuring and Marking category, as well as to your builder page: mklotz's Homemade Tools. Your receipt:

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