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Replacing felt light traps on old 8x10 film holders

Discussion in 'Miscellaneous Equipment' started by Robert McClure, Jul 21, 2004.

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  1. Jul 21, 2004 #1
    Robert McClure

    Robert McClure Member

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    Some time ago I purchased a dozen old (circa 1940, I think) Kodak/Graflex 8x10 filmholders. I have examined the inner light-trapping felt and have decided to replace it if I can. The holders have some external wear but seem otherwise good. Any suggestions on where I might source the vartiety of felt material appropriate for this application? Any other thots from anyone on this project? Thanks much in advance!
     
  2. Jul 21, 2004 #2
    David A. Goldfarb

    David A. Goldfarb Moderator Staff Member Moderator

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    You can get light-trap material from www.micro-tools.com.

    I would say that if the holders are held together by screws, it's probably easy enough to repair. If they are glued, then I wouldn't bother for 8x10" and smaller holders.
     
  3. Jul 21, 2004 #3
    John Koehrer

    John Koehrer Subscriber

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    The material from micro tools is a foam & probably won't hold up in a film holder with insertion & removing darkslide. I've used velvet ribbon from the local fabric store. Unless the holder comes apart it's a pain in the neck to do.
     
  4. Jul 22, 2004 #4
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    Robert McClure

    Robert McClure Member

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    Replacing light-traps

    Many thanks to both of you (David and Shaggy) for your replies. Yes, the holders do disassemble by removing four screws to access the light trapping end. It's a little tricky to remove the felt. However, what a great design for strength, longevity, and reliability these holders have. The felt can literally be turned over, end-for-end, reinstalled, and the holder should be good to go. The spring design is quite interesting. It's a strip of (comb-like) brass that seems to have maintained its tensile strength. Thanks again, folks!

    Robert McClure
     
  5. Aug 8, 2004 #5
    Seele

    Seele Member

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    Robert,

    Some earlier Toyo film holders are assembled with screws and can be thoroughly cleaned as well, so they might be worth seeking on the used market.

    I have a feeling that the comb-shaped spring around which the felt fabric wraps over was made out of phosphor bronze, an excellent material for low-load leaf springs; expensive but sure holds its tension practically forever.
     
  6. Aug 9, 2004 #6
    paul ron

    paul ron Subscriber

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  7. Aug 10, 2004 #7
    Whiteymorange

    Whiteymorange Member

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    Robert,
    I just replaced the light-trap strips on some old German 9x12 filmholders with the soft side of a velcro strip. Think I read about it on one of the forum threads, in fact. It worked great! I just bought the self-adhesive type of velcro ($1.79 a foot) and cut carefully. This was for a Rietzchel Clack camera that hasn't been used since WWII. I also replaced the light traps on the camera. The fit is a bit tighter, but no leaks yet...

    http://photos-collection.com/html/folding_clack.html for a picture of a Rietzschel
     
  8. Aug 11, 2004 #8
    Jon Shiu

    Jon Shiu Subscriber

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    The velcro stuff does shed a bit though, so maybe not the best for film holders.

    Jon

     
  9. Aug 11, 2004 #9
    Ole

    Ole Moderator Staff Member Moderator

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    I had a similar problem recently - with my camera. I went to the nerest fabric/sewing supplies shop and bought a meter of black velvet ribbon. Glued it in place with contact glue.

    Works perfectly, doesn't shed, and was even the exactly correct dimension! Thank god for metric standardisation (the camera is a Linhof Color).