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Thread: Ground glass install

  1. #1

    Join Date
    May 2010
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    Kalamazoo, Michigan
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    Ground glass install

    I bought a new old Century View camera from a private Party. When packaging it up he broke the ground glass. He shipped it anyway and ordered a new glass for me. Both arrived today. The new glass is rectangular without clipped corners. When I tried to install it I noticed the corners of the back are raised and the glass won't seat. This tells me the original glass had clipped corners. Should I get a new glass with clipped corners or is it OK to chisel the corners of the back out so the glass will fit? Or should I try to clip the corners on the glass myself? I have never had any luck cutting window glass myself!!!!

    Terry in Kalamazoo

  2. #2

    Join Date
    May 1999
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    539

    Re: Ground glass install

    Maybe you ask someone in a glasswork shop to cut it. It will take them one or two minutes.
    Or you can cut the glass yourself... check your skills first on a glass photo frame. If you have a Dremel rotary tool, use a cutting disk to very slightly mark the cut, much easier for that small cuts than with the diamond hand cutting tool.

  3. #3

    Join Date
    May 2016
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    Re: Ground glass install

    Don't strike the glass yourself - remember, it has 4 corners, the odds are against you. If you can get a new glass, if not let others do the job - the responsibility will be theirs.

  4. #4

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    May 2006
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    Re: Ground glass install

    Quote Originally Posted by Pfsor View Post
    Don't strike the glass yourself - remember, it has 4 corners, the odds are against you. If you can get a new glass, if not let others do the job - the responsibility will be theirs.
    Had the same problem once before, I modified the ground glass frame ( very Sharp chisel ) by cleaning out the corners. Worked fine for me with no ill effects.
    Original purpose of the clipped corners was to allow for bellows movement; not really a concern.

  5. #5

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    May 2016
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    Re: Ground glass install

    That's the "if Mohamed cannot go to the mountain, the mountain needs to go to Mohamed" approach. But it seems rather strange to mutilate your camera just so that a non correct glass can be used.
    By the way, the clipped corners function is not to let the bellows breathe when moved, even if it sounds logically correct. The primary reason is to allow for vignetting control when lens movements are used. It's been discussed quite often on the forum.

  6. #6

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    Re: Ground glass install

    Quote Originally Posted by Pfsor View Post
    That's the "if Mohamed cannot go to the mountain, the mountain needs to go to Mohamed" approach. But it seems rather strange to mutilate your camera just so that a non correct glass can be used.
    By the way, the clipped corners function is not to let the bellows breathe when moved, even if it sounds logically correct. The primary reason is to allow for vignetting control when lens movements are used. It's been discussed quite often on the forum.
    You are so right. This is a beautiful camera in about 90% condition. Built around 1903-06. I will attempt to cut the corners of the glass. Jose's idea of using a Dremel sounds good to me. I never had any luck with the $3 glass cutters from Home Depot. The glass cost my seller $70 so I'm hoping not to muck it up!
    Terry

  7. #7

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    May 2016
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    Re: Ground glass install

    Quote Originally Posted by dentkimterry View Post
    ...
    I will attempt to cut the corners of the glass. Jose's idea of using a Dremel sounds good to me...
    The glass cost my seller $70 so I'm hoping not to muck it up!
    Terry
    My conscience is clear, I have warned you. Jose promised me he will pay you 70$ if you "muck it up"...

  8. #8
    Member
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    Jun 2004
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    Port Townsend, Washington
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    Re: Ground glass install

    I had the same problem once. I took it to a local window glass store, and they ground it down to fit in about 2 minutes. Such a small job they charged me nothing.

    Keith

  9. #9
    Jim Jones's Avatar
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    Aug 2006
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    Chillicothe Missouri USA
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    Re: Ground glass install

    Quote Originally Posted by dentkimterry View Post
    You are so right. This is a beautiful camera in about 90% condition. Built around 1903-06. I will attempt to cut the corners of the glass. Jose's idea of using a Dremel sounds good to me. I never had any luck with the $3 glass cutters from Home Depot. The glass cost my seller $70 so I'm hoping not to muck it up!
    Terry
    I've cut a fair amount of glass (including ground glass) over many decades, and still wouldn't want to gamble on cutting a $70 GG.

  10. #10
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    Re: Ground glass install

    May be too late, but take it to a stained-glass studio or supply store. They can cut it and then grind the edges for safety. It’s an easy job, and the make far more intricate cuts routinely.

    Rick “whose with is a professional stained-glass maker” Denney

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