I am way out of my comfort zone doing an encaustic sculpture if a Koi fish! I made a mold using plaster wrap. This is the stuff they use to make casts out of back in the day. It took quite a few layers to make it sturdy. After letting it throughly dry, I have put the first coat of encaustic medium on it and fused it on low with a heat gun.I have several ways that I can sude the wax. The hottest is a torch. Second, Heat gun on high and I also have a tacking iron that I will use on it to smooth out some of the medium. I need to give it one two two more coats. It's great fun to work on and scary at the same time!