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  1. #11

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    Colin,
    Well, I can't answer with much more accuracy than that. I also have never sized an entire sheet. My advice would be to not get too caught up in measuring the coverage of this stuff. Just mix up a decent amount (I mix 1:2, so say, 25ml:50ml) and go. Whatever you have left, put it in a bottle with a lid and use it later. When my bottle gets low, I just mix some more.
    I brush it on with an old Hake brush, but a foam brush would probably work as well. One coat, let it dry just to a sheen, then another coat. Let it dry for a few hours and you're ready to go.
    Good luck,
    Steve
    www.scdowellphoto.com

  2. #12
    Kerik's Avatar
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    Quote Originally Posted by TheFlyingCamera View Post
    How do you mix up the glyoxal to use as hardener? I've seen directions to use it in the same proportion to use as the formalin, but the glyoxal comes as a powder, not as a liquid, so how do you mix it to get it to the same strength?
    Where are you getting it as a powder? B&S sells a 40% solution, so I'd suggest mixing it up that way.
    Kerik Kouklis
    Platinum/Gum/Collodion
    www.kerik.com
    2014 Workshop Schedule Online

  3. #13
    TheFlyingCamera's Avatar
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    Maybe I'm just confused - I got my glyoxal from B&S, and I'm just getting the bottle confused with something else.

  4. #14

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    Thanks Paul and Steve for the info. I was mainly trying to get an idea of the cost vs gelatin. I've been getting some staining with glyoxal and have some glutaraldehyde on the way but might try the PVA out if that's too much of a pain to use.

  5. #15

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    Has anyone tried a run-of-the-mill white pva glue like Elmer's Glue-all for sizing?

  6. #16

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    Quote Originally Posted by Colin Graham View Post
    Has anyone tried a run-of-the-mill white pva glue like Elmer's Glue-all for sizing?
    i myself of course haven't, since the stuff isn't sold here. but... i remembered that sandy king once mentioned the stuff in the b&s forum. iirc it didn't work for him.

    here's the link:
    link

  7. #17

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    Yes, I'd forgotten that it wasn't very waterproof! Thanks for the link.

  8. #18
    Jeremy's Avatar
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    Here's a 3min video going from just having set everything out to coat to a finished coat of full strength Gamblin PVA Size (I like the semi-luster feel of the full strength). Once the print is hung it's ready to be printed on in 5-15 minutes depending on how long it takes to full dry.

    Also, I coated a second image, but the digi-camera I was taking the video with died on me. In the first video I should NOT have gone back to the PVA with the foam brush for a 3rd time as I didn't need more PVA and that's why it takes me so long to brush it smooth--too much solution. The whole process, when you don't use too much PVA, takes less than 1/2 the amount of time this coating did.

    http://www.youtube.com/watch?v=JqGTDS5RNO0

    Gamblin PVA Size full strength, $0.99 foam brush, the highest density foam roller you can get at Lowe's, Rives BFK with the palladium image already printed.
    Let's see what I've got in the magic trash can for Mateo!

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