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  1. #1

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    A DIY 4x5 vacuum film holder

    Hello folks,

    I'm a long time lurker and first time poster to APUG. I'd like to present a webpage I've created for making your own vacuum film holder; the text and accompying photographs are a bit too lengthy to post here. I designed my holder for a 4x5 camera, however the design could be easily adapted to larger formats (for you folks who have film falling out of 8x10 holders!).

    The page can be seen here: www.deadbread.com/crumbs/vac.html

    I've been working on this project for some time, and comments or suggestions (improvements?) would be greatly appreciated.

  2. #2
    Jerevan's Avatar
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    Welcome to posting on APUG!

    I don't think I'll ever need to use a vacuum film holder, but I am amazed by the inventiveness and execution of this project! Cool with a big C.
    “Do your work, then step back. The only path to serenity.” - Lao Tzu

  3. #3
    David A. Goldfarb's Avatar
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    I think this is a really neat project and not a terribly complicated design.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  4. #4

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    Great work! I'll give it a try with an older 8x10 holder sometime this winter. I wonder if using a suction bulb would provide enough suction?

  5. #5
    noseoil's Avatar
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    Danny, great idea and well executed. Welcome! tim

  6. #6

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    Thanks for your kind comments all.

    Peter, I originally replied here that a squeeze bulb probably wouldn't work. I was wrong! I found that a Giottos 'rocket air' bulb works perfectly -- 3/16" tube fits well in the bottom valve of the bulb, and it will generate a vacuum.
    Last edited by konakoa; 10-13-2008 at 06:59 PM. Click to view previous post history.

  7. #7

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    I was thinking of using the bulb from my pipettes. This is a standard lab accessory. First, you squeeze the air out of the bulb, while holding open the valve on the rear of the bulb. To suck, you then open the valve on the front of the bulb. See:

    http://www.coleparmer.com/catalog/pr...sp?sku=2480520

    Since I already have the bulb, I'll give it a go and see what happens.

  8. #8
    David A. Goldfarb's Avatar
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    I think I've read about something like this that uses a bulb just like the bulbs used for old-style air-piston operated shutters. Probably for most LF shooters, a bulb could provide a sufficient vacuum for ordinary exposures, but this may not be enough for your astrophotographs.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  9. #9

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    Very cute. I had no idea that those pumps for minnow bucker aerators could be reversed.

    One caution, though. Penn Plax products, especially air pumps, are notorious among aquarists for short life. I don't know if other brands of pumps like the one you used come from the same factory so can't recommend something that will last longer. But you might consider making and carrying a spare pump, just in case.

  10. #10

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    Quote Originally Posted by David A. Goldfarb View Post
    I think I've read about something like this that uses a bulb just like the bulbs used for old-style air-piston operated shutters. Probably for most LF shooters, a bulb could provide a sufficient vacuum for ordinary exposures, but this may not be enough for your astrophotographs.
    You must have read my mind. I use a similar model on a packard shutter.

    G

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