Sunday, January 17, 2016
A stiffer mix of Plaster of Paris dries very, very quickly indeed. Something like seven minutes on a cold day. But with a stiffer mix, 2 and a little bit more of plaster to 1 of water, you get a thick paste that can be troweled onto a damp surface and then you can scratch at it with pointy tools, stiff brushes, and if you're very lucky, and if you work very quickly, you can produce a couple of square inches of something that remotely resembles a rock formation. Then you have to worry about what happens when the plaster finally cures hard, the moisture gone from it. It's been a couple of days waiting for that to happen.