Mo985 posted:Decided to try the "plaster of Paris and blue shop towel" method for some hillside. Small batches is the key, and instead of a 2:1 ratio, I went 1:1, and found the towels did better with that mixture. Then as it firmed up, I used the paste to smooth out some of the wrinkles in the towels. Cardboard weave underneath.
I used the same method but with thinned down joint compound.