Quote Originally Posted by Lukas Werth
Casein is one of my favorite processes; I most of the time prefer it over gum - perhaps just because I got used to it. I buy the casein from Kremer pigments and dissolve it in household ammonia. Examples are here:

Very nice work. I think I should buy some casein and mix my own and do samples of both. Now I just need to work out the light sourse. Thanks for the help.