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Thread: Vacuum Frame Question

  1. #1

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    Oct 2019
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    Vacuum Frame Question

    Iím in the market for a vacuum frame, and looking online I came across these: https://www.dennis-ramos.com/portable-vacuum-frame. Does anyone know anything about them? Are they any good? The price seem right (from what little I know). And if anyone knows of a better, similarly affordable option, Iíd be eager to hear it. (The Edwards Engineered ones are very nice looking but wayyyy out of my price range.) Thanks!

  2. #2
    Jim Jones's Avatar
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    Re: Vacuum Frame Question

    I worked several years at making half-tone duplicates up to 32x40 inches on vacuum frames. The original and copy were sandwiched between fairly thick glass and thick strong air-tight fabric. This allowed a working vacuum of about -25 PSI. The frames linked to in the original post appear to work at a much lower vacuum, which would limit the closeness of contact between original negative and copy. Perhaps it suffices for copying continuous tone negatives, but half-tone copying with large UV light sources demanded very close contact. Upon second thought, the porous nature of alternative prints should permit much less vacuum for adequate draw-down.

  3. #3
    Drew Wiley
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    Re: Vacuum Frame Question

    Remarkably little vac power is required if there is no leakage around the perimeter. Depends on the efficiency of the frame design. A more common problem is too much vac drawdown. Too powerful a pump requires a bleeder valve - a good feature in any event.

  4. #4

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    Jan 2019
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    Re: Vacuum Frame Question

    I have the medium one. Works well, I use it to make 11x14 carbon prints. I have no real complaints. The vacuum is sufficient although not amazing, but you donít need much to make good exposures; the pump requires adding oil frequently as it leaks. This has nothing to do with the seller, most cheap pumps will do that but I have no desire to upgrade it.

  5. #5

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    Re: Vacuum Frame Question

    That's pretty neat. No glass definitely would help with UV

  6. #6

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    Suwanee, GA
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    Re: Vacuum Frame Question

    Consider this - Noisy oil splattering energy consuming pump vs quiet glass contact print frame for a salt print at 30 minutes to 1 hour.
    Adventure is worthwhile in itself. ... Never interrupt someone doing what you said couldn't be done. -- Amelia Earhart
    http://www.searing.photography

  7. #7
    Tin Can's Avatar
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    Re: Vacuum Frame Question

    I hate those crappy oil filled and leaking Air Conditioner vac pumps

    Garbage!

    I agree, use a glass plate leaf spring pressure box

    Cheap and simple
    Tin Can

  8. #8
    Drew Wiley
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    Re: Vacuum Frame Question

    Quiet Oilless vac pumps have been around a long time.

  9. #9
    Tin Can's Avatar
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    Re: Vacuum Frame Question

    I use one

    Quote Originally Posted by Drew Wiley View Post
    Quiet Oilless vac pumps have been around a long time.
    Tin Can

  10. #10
    Drew Wiley
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    Re: Vacuum Frame Question

    There were millions of them made for industrial line applications. The ones adapted for graphics applications were just a small percent.

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