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Thread: Hole Saw For Commercial Ektar Lens

  1. #11
    Drew Wiley
    Join Date
    Sep 2008
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    SF Bay area, CA
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    18,337

    Re: Hole Saw For Commercial Ektar Lens

    If it's a holesaw you have to measure the ACTUAL outside tooth diameter with a caliper. Brands differ, even within the same nominal size. Hole saws are not precise with respect to diameter. Someone might want to debate that, but I doubt they've sold the thousands and thousands of them I have.

  2. #12

    Join Date
    Dec 2014
    Location
    Iowa City, Iowa
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    1,697

    Re: Hole Saw For Commercial Ektar Lens

    In wood you can cheat a couple of millimeters by rocking the hole saw using a hand drill. I have mostly wooden boards that I get from Zimba (or something like that) off of Ebay. These are machined, lathed, flawless. I will never again hack away at a nice board with a hole saw. Especially a metal board. I found a semi retired machinist who has cut back to 40-50 hours a week. He's helped me with some metal parts, worth every penny.

    Still if you want to do it yourself go ahead, caution even clamped and held down its easy to warp metal boards.

  3. #13

    Join Date
    Sep 2007
    Location
    AZ
    Posts
    4,431

    Re: Hole Saw For Commercial Ektar Lens

    Quote Originally Posted by pendennis View Post
    When cutting metal, I always keep the hole saw lubricated with machine oil I've never had a warp. My main concern here was whether the 2" or 50mm hole saw would be correct.
    Is this an April Fools joke?

  4. #14
    Photographer
    Join Date
    Feb 2001
    Location
    Pine Junction, CO
    Posts
    992

    Re: Hole Saw For Commercial Ektar Lens

    As Duolab123 said, for a metal board, find a home machinist who can cut a perfect hole for you. It will be worth a couple of bucks versus a hack job you can do with a hole saw.
    Keith Pitman

  5. #15

    Join Date
    Jan 2019
    Posts
    776

    Re: Hole Saw For Commercial Ektar Lens

    In the old days, if not in a hurry I would contact Luland on eBay and ask them to build me a Linhof or Sinar or whatever plate with a custom hole. It’s usually same price as the standard Copal hole sizes. It’s CNC’d and they do a great job. They can also machine custom retaining rings etc

    You still can if you don’t mind buying directly from China (and apply whatever handling provisions you are comfortable with).

    Turns out it’s cheaper for me than going to a CNC machine shop around my area, they know already what I need without having to provide a drawing, and usually takes about 7-10 days to arrive which is not bad.

  6. #16

    Join Date
    May 2015
    Location
    SooooCal/LA USA
    Posts
    2,802

    Re: Hole Saw For Commercial Ektar Lens

    For metal, boring bar on a mill...

    For wood, I use a circle cutting attachment on my router... Beautiful hole...

    On some retaining rings, there is a shoulder that can go inside the board that is a little bigger than the threads that might be a standard size... Measure that too...

    Steve K

  7. #17
    45er
    Join Date
    Nov 2017
    Location
    Scotland
    Posts
    45

    Re: Hole Saw For Commercial Ektar Lens

    I always like to drill a hole before I drill the hole, a whole lot better hole.

  8. #18

    Join Date
    Dec 2001
    Location
    San Joaquin Valley, California
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    9,599

    Re: Hole Saw For Commercial Ektar Lens

    Quote Originally Posted by seall View Post
    I always like to drill a hole before I drill the hole, a whole lot better hole.
    A holistic approach, eh?
    "I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White

  9. #19

    Join Date
    Dec 2005
    Location
    El Pueblo de Nuestra Señora la Reina de los Ángeles de Porciúncula
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    5,808

    Re: Hole Saw For Commercial Ektar Lens

    Quote Originally Posted by John Kasaian View Post
    A holistic approach, eh?
    Holy Cow!

  10. #20

    Join Date
    Dec 2005
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    El Pueblo de Nuestra Señora la Reina de los Ángeles de Porciúncula
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    Re: Hole Saw For Commercial Ektar Lens

    ... and now we know the whole story!!

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