Re: gum bichromate
Virginia Boehm (gini@ix.netcom.com)
Sat, 10 Jun 1995 04:51:53 -0700
>
>I think the problem is that he makes a SENSITIZED SOLUTION OF GUM and
that
>indeed will not last at all. You should combine the sensitizer with
the gum
>(or whatever colloid) just before use, and the mixing should be done
under
>a safelight, or "bug bulb", although I understand the latter is not
>available in Europe.
>
>
>Luis Nadeau
If Luis is right and that's what you are doing, Anthony, it just won't
work. Prepare your saturated dichromate solution with distilled water,
and only when you are ready to coat the paper mix it with gum (I use
gum arabic) and pigment. Coat in subdued light and let it dry.
Expose it immediately after it dries for best results.
>
>Gini