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Thread: How not to drill a lens board

  1. #1

    How not to drill a lens board

    How not to drill a lens board

    Image 1 is a lens boards properly sized and drilled.

    Image 2 is one where connect the holes was done.

    Image 3 is the first lens board on top of the second.

    Image 2 will cause light leaks.
    Click image for larger version. 

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    Richard T Ritter
    www.lg4mat.net

  2. #2
    Drew Wiley
    Join Date
    Sep 2008
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    SF Bay area, CA
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    16,532

    Re: How not to drill a lens board

    Alas, a drill press or milling machine works so much nicer than a lawnmower or hedge trimmer!

  3. #3

    Join Date
    Nov 2017
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    538

    Re: How not to drill a lens board

    Quote Originally Posted by Drew Wiley View Post
    Alas, a drill press or milling machine works so much nicer than a lawnmower or hedge trimmer!
    +1! You really need a mill with a flycutter or a lathe.
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    Or far more patience than I have.
    Expert in non-working solutions.

  4. #4

    Join Date
    Dec 2017
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    The Netherlands
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    Re: How not to drill a lens board

    Far beyond my capabilities, so I'm forced to buy them. But I needed to do that only once, for I bought my lenses already mounted on a lens board.
    I own the gear, but those don't make masterpieces. My everyday experience.

  5. #5
    Tin Can's Avatar
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    Dec 2011
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    18,721

    Re: How not to drill a lens board

    I buy an exact fit NEW quality USA Hole Saw whenever I need a new size and clamp the lens board DOWN in my drill press

    I have a lot of hole saws

    Or I use my old buddy who makes them full time

  6. #6

    Re: How not to drill a lens board

    I did not do the second board.
    I have a lathe, a milling machine, a drill press and fly cutters.

    The person that made image number2 said he read about doing that way on this forum.
    Last edited by RichardRitter; 19-Jan-2022 at 13:14. Reason: add more text
    Richard T Ritter
    www.lg4mat.net

  7. #7
    ic-racer's Avatar
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    Feb 2007
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    6,181

    Re: How not to drill a lens board

    Works perfect when I do it. Craftsmanship is only as good as the craftsman, no matter what the tools.
    Click image for larger version. 

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  8. #8

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    Oregon now (formerly Austria)
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    Re: How not to drill a lens board

    Quote Originally Posted by ic-racer View Post
    Works perfect when I do it. Craftsmanship is only as good as the craftsman, no matter what the tools.
    Click image for larger version. 

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    +1

    I've made nice lensboard holes with a drill, a jeweler's saw and finished with hand files and emery paper. The holes are perfectly round and there are no light leaks.

    As nice as a cleanly milled hole made with a flycutter is, the hole only has to fit well and not leak light when the lens is mounted to fulfill its photographic purpose in life. There are lots of ways to make a hole...

    Doremus

  9. #9

    Join Date
    Aug 2004
    Location
    NYC
    Posts
    565

    Re: How not to drill a lens board

    when using the multi hole method, you have to leave a safe line so after drilling is done you can clean it to the actual dimension line with a file and emery cloth. i allow my safe line at least an 1/8" so there is enough meat to fine tune to the finish line.

    yup, its not the tools... its who is using them.

  10. #10
    Tin Can's Avatar
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    Dec 2011
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    18,721

    Re: How not to drill a lens board

    The biggest hole I made for a lens was 6" for 790mm big lens

    I thought I would never use that hole saw again

    Wrong, used it 6 times, cost $20

    I use Made in USA Milwaukee Hole Shooter 1/2" I must use the extra handle and hold on tight, it can break my wrist, if I am sloppy

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