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Thread: monobaths

  1. #1
    RalphLambrecht's Avatar
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    monobaths

    does any body have monobath formula for me thay would work with ilford multigrade IV-RC?
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  2. #2
    Ian Grant's Avatar
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    Crawley's FX6a works well with paper but you'd need to play around with the Thiosulphate level (70-125g)and perhaps add bromide or benzotriazole, additional Hydroquinone increases the bcontrast as does lowering the Thiosulphate

    Monobath FX6a
    normal speed

    Hydroquinone 12 gm
    Phenidone 1 gm
    Sodium sulphite (anhyd) 60 gm
    Sodium hydroxide 10 gm
    Sodium thiosulphate 90 gm
    Water to 1000 cc

    I did a lot of work on Monobaths commercially in the late 1970's and we had planned to market one specifically for papers, I've got my notes somewhere in storage

    Ian

  3. #3

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    Quote Originally Posted by RalphLambrecht View Post
    does any body have monobath formula for me thay would work with ilford multigrade IV-RC?
    Ralph, why do you want to use a monobath rather than a regular developer, stop-bath and fixer?

  4. #4
    RalphLambrecht's Avatar
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    Quote Originally Posted by Keith Tapscott. View Post
    Ralph, why do you want to use a monobath rather than a regular developer, stop-bath and fixer?
    i need a cost effective alternative to large-format polaroidsand hope to get this from direct-positive papers developed in monobaths!thoughts?
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

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    Ian Grant's Avatar
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    I can't see why it shouldnt be possible and you could ajust the monobath to control contrast, you'd need to experiment to seeby how much.

    Ian

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    Haist in "The Monobath Manual" gives a formula for processing papers. I can post it if anyone does not have access to this book.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  7. #7

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    Quote Originally Posted by RalphLambrecht View Post
    i need a cost effective alternative to large-format polaroidsand hope to get this from direct-positive papers developed in monobaths! thoughts?
    I think I see what you are trying to achieve. I thought that may be this paper would be a better choice, until I realized that it was fibre-based, not resin-coated.

    http://www.ilfordphoto.com/products/...graphic+Papers

    My thoughts are that some pre-flashing of the papers before the camera exposure might be a better way of controlling contrast? A soft working metol developer like Ilford ID-3 diluted more than usual may also help.

    A yellow filter on the camera lens would act as a low grade number filter too for multigrade.

  8. #8
    RalphLambrecht's Avatar
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    keith,
    you are right, and that is exactly what i do. iuse either a yellow filter on the taking lens ora self-madepre-exposure filterrto reduce contrast
    . now i want to make a plastic daylight tank to develop the paper within a minute or two. this way, i won't need the expensive polaroid any longer.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  9. #9

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    I think you have a brilliant idea, Ralph.

    You could use a plastic paper safe as a daylight tank.

    Let us know how it works!

    Peter Gomena

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    BetterSense's Avatar
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    Instead of a tank, maybe you could simply use a black lightproof bag like the ones the paper came in.

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