[Alt-photo] Re: casein prints

[Christina Anderson]

Marek,
Yes, just brushes, hake brushes 2" and 3".
I use 10-15% am di and my gum exposures are that long. 4-6 minutes. But I could even go longer with yellow if I wanted to. Like 4 mn thalo,5 mn magenta, 6-9 yellow. This gives me an hour development time. However, I have thought of doing what Sarah Van Keuren does, a short exposure and 10 mn development! Just haven't gotten around to it.
I'm using UVBL bulbs, are you?
I tried the roller and it kept leaving lines in the coating so didn't keep using it. I've actually tried it a number of times, going over and over and smoothing it out lighter and lighter but found I was better with a brush most of the time. Maybe will revisit...again. 
Jorj, fun caseins!
Chris



On May 28, 2013, at 6:54 PM, Marek Matusz wrote:

> Chris,
> 
> DO you use just brush? I found that using foam roller to smooth the layer works like a charm for both gum and casein. If your layer is too thick after intial rolling you can roll the brush over some dry paper towel to take excess of the solution to get them real thin. . Just like Chris I also think that the secret is to get them thin. Flaking is the result of thick coating. The same with gum. If you get a thick coat gum it will flake, no question about it. It helps to be exact in the beginning. Make a solution of same strength, use same amount of dichromate and pour the same amount of solution for the paper size
> 
> Chris. I am so surprised by your exposure of gum. 6 minutes? I do not expose that long even with palladium like negatives and bleach development.
> 
> Marek