U of S | Mailing List Archive | alt-photo-process-l | RE: Carbon on glass

RE: Carbon on glass

On Tue, 11 Sep 2007, Marek Matusz wrote:

Hey Cor, You are correct that back exposure is no go with BL tubes, the image would be very diffused. I did use sugar in my carbon recipe since most of the sources reccomend it, I am not sure if it is needed for glass work.
Speaking of sugar, I'm curious if anyone here has ever tested with and without sugar. I had several old formulas for gum printing that called for sugar, which my tests showed made no difference at all -- although perhaps with carbon it does, and it just got added to gum formulas out of habit, like the buggy whip on early autos?