Yeah, everytime I saw that stuff it was super expensive...There is that "converter" stuff at the paint store
It seems a little expensive though
I got a sample of Rock Hard paint hardener from my paint rep. It's made by Rock Miracle. A 5 gal pail of it will "harden" about 100 gals of paint and costs about $140. Kind of steep. And it doesn't so much harden it as turn it into a jelly. Just for fun, I put 1/2 Tblsp. into a cup of water, and it solidified it within about a minute. If allowed to dry out you'll be left with a few little rocks at the bottom of the container. Fill up the container with water again and it will gel up again.There is that "converter" stuff at the paint store
It seems a little expensive though
Probably just vermiculite...lol (plant soil additive)
We used to spread latex on cardboard to dry it, but now cb's a valuable industrial commodity (recyclable), so can't do that anymore