I think mixing the paint w/ methyl cellulose (often found as Ross Pritt Art
Paste) would stablize the paint & be water soluble. It is amazing stuff. I use
it with my water color tube paint to transparentize the paint for my personal
Artwork. It acts as a gel & is also archival as a glue in collage & hinging
Mats.You can control viscosity by amount of water added. (Glycerine would
probably work too & a little could be added to the methyl cellulose.) $2-
$2.50 worth of powder makes a gallon. It has a practically infinite shelf
life. Hardware & Paint&Wallpaper stores sometimes carry it & it would be less
than the Art Supply stores. Its GREAT for Papier Mache' because it doesn't
smell bad or sour like wheat paste- Its not quite as strong though & I've been
told it doesn't work as well for bowls made w/ cool whip containers as molds.
It is great for some Creative Experimentation...Bill - 25 mi from the Blue
Ridge Parkway in N.C.