Hi. I have bought some plumbers putty that I thought was a good cheap epoxy (it was a dollar for a 14oz tub). But the stuff is not drying. After looking around online half the articles say it dries in hours, the rest never. Lol anyone ever used it? Know of any way to use it and get it to harden. The stuff sculpts great, it holds patterns well. But it's kinda useless if it never sets.