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Thread: How do I remove Beam Splitter Glass

  1. #1
    Roger William Barr
    Join Date
    Dec 2012
    Location
    Brooklyn
    Posts
    64

    How do I remove Beam Splitter Glass

    I am in the process of fixing a Busch pressman D and find I need to replace the beam splitter.. Inside the Kalart everything is very clean.. Prism mirror looks good.. but the beam splitter is toast..
    I have found a couple of sources on the web for new glass but need advice on how to get the old one out without wrecking the mount... Help me Spock...

  2. #2
    Roger William Barr
    Join Date
    Dec 2012
    Location
    Brooklyn
    Posts
    64

    Re: How do I remove Beam Splitter Glass

    Lots of views but no replies.. someone must have done this ??

  3. #3
    Small town, South Carolina, US
    Join Date
    Sep 2006
    Location
    South Carolina, USA
    Posts
    257

    Re: How do I remove Beam Splitter Glass

    I have seen it mentioned in the past somewhere -- You may want to try acetone or nail polish remover. Just a small drop.

  4. #4

    Join Date
    Dec 2014
    Location
    Iowa City, Iowa
    Posts
    1,178

    Re: How do I remove Beam Splitter Glass

    I have a Crown Graphic, the glass was shot. I cut a piece from a Polaroid range finder and glued it on top of the original. Works fine. Not very elegant. There are guys that will make it like new for 3-400 bucks.
    The Polaroid rangefinders were outstanding.

  5. #5

    Join Date
    Dec 2014
    Location
    Iowa City, Iowa
    Posts
    1,178

    Re: How do I remove Beam Splitter Glass

    Yeah, mine is a Kalart too. I think Zeiss Ikon supplied Polaroid with rangefinder components. I got my mirror out of a Polaroid Big shot.

  6. #6
    Roger William Barr
    Join Date
    Dec 2012
    Location
    Brooklyn
    Posts
    64

    Re: How do I remove Beam Splitter Glass

    3-400 Bucks.. no.. you must be talking about having someone else do the work... you can buy the glass for less than 20 bucks..

    I may try the acetone drop..

  7. #7

    Join Date
    Jun 2020
    Location
    Michigan
    Posts
    2

    Re: How do I remove Beam Splitter Glass

    When I replaced the beamsplitter glass in my Speed Graphic, I was able to loosen the adhesive from the edges of the glass by gently chiseling at it with a very small flathead screwdriver. The adhesive was certainly past it's prime, and it dropped right off once it separated from the glass. I've found that a small drop of cyanoacrylate (super) glue right at the edge of the glass holds it in place without getting wicked to the viewing surfaces. Best of luck!

  8. #8
    Roger William Barr
    Join Date
    Dec 2012
    Location
    Brooklyn
    Posts
    64

    Re: How do I remove Beam Splitter Glass

    Acetone had no effect at all.. `I tried the chiseling with a triangular scalpel.. and managed to break the glass off.. so now I will just have to file it down and glue the new piece onto the stump..

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