Jim help me to get succes in this process. I am just thankfuf to him. The choice of the paper is a great part of the succes , lana aquarelle and Fabriano give great result. There is o pigment in your coat so exposure will be shorter. and the exposre will be different as you must use a contrastier negative(positive) compare to your gum negative
Give it a try, Paul, and see what happens! I don't know the answer, so I am not trying to bait you ;) And I do not think that it is 3:1....1 pt of gum, mixed 1:1 by vol, plus 2 pts gum mixed 1 pt gum(powder) to 2 pts H20, plus 1 pt saturated Potassium Dich. This serves as a good starting point, and is what I use. Depending on your results, you can coat your surface, after it has dried, with a second coat. Your exposure is going to be longer...4.5-5 under Black light or sun. Do a few test prints as it can be very tricky!
On Fri, Oct 30, 2009 at 10:45 PM, Paul Viapiano <firstname.lastname@example.org> wrote: