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Thread: Miniature Optical Centre Punch

  1. #1
    Supporting Member editor@glue-it.com's Avatar
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    Miniature Optical Centre Punch

    I realised that the commercial optical centre I have is too large, the base was just too wide and so limits how close you can get to a feature that protrudes from a surface.

    So, I decided to make a small optical centre punch.

    Miniature Optical Centre Punch-optical-centre-punch-01.jpg

    It has turned out so well that today I sat down and drew up some plans - optical centre punch.

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    Last edited by editor@glue-it.com; Jul 4, 2021 at 02:25 PM. Reason: my original description was just terrible, sorry

  2. The Following 5 Users Say Thank You to editor@glue-it.com For This Useful Post:

    Home-PC (Jul 5, 2021), Jon (Jul 6, 2021), kboy0076 (Jul 13, 2021), Paul Jones (Jul 6, 2021), RetiredFAE (Jul 5, 2021)

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    Content Editor
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    Thanks editor@glue-it.com! We've added your Miniature Optical Center Punch to our Measuring and Marking category,
    as well as to your builder page: editor@glue-it.com's Homemade Tools. Your receipt:




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    So there are no plans or procedures to make this without paying? Didn't realize forum has become a "marketplace.

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    Nor any images to show how it works...

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    Quote Originally Posted by Nick79 View Post
    So there are no plans or procedures to make this without paying? Didn't realize forum has become a "marketplace.
    The cost of the plans was set as roughly equivalent to a coffee or a beer - a token that I think most would offer in return for plans. If it offends I can just remove it.

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    Quote Originally Posted by BuffaloJohn View Post
    Nor any images to show how it works...
    I will see if I can get an image of this working, not easy, but I did get an image of the larger Soba Optical Centre:

    Miniature Optical Centre Punch-soba-optical-004.jpg

    Here are the parts and the beam that was marked up and then centre punched:

    Miniature Optical Centre Punch-soba-optical-006.jpg

    The steps to using it are:

    1. Place the base on the workpiece
    2. Put the optical centre into the base
    3. Align the cross-hairs / circle / dot (different options are described in the plans) on the marks on the workpiece
    4. Whilst holding the base in place
    5. Remove the optical centre
    6. Insert the hardened centre
    7. Tap the top of the hardened centre once with a small hammer
    8. Done

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    Re: "Didn't realize forum has become a "marketplace"

    I have been a member of this forum for a number of years and have bought plans for a number of projects. I thought that was the purpose of the forum.

    Ralph



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