Excuse me, what material is the mold for making plaster statues made of, and how to do it?

If you pour the mold yourself, first make a shape with clay (convex at this time), then pour a layer of gypsum, and the concave will do the same. After drying, pry the clay out and fix the uneven place. At this time, the female mold is ready, and then the plaster is poured. When it is dry, use a small bamboo stick to pick out the joint, pour water into it, and slowly pry the two layers apart, so that the male mold can be dug out. If it is a plane relief, it is best to compound a layer of fiber in the middle to increase strength. That's what my college clay sculpture class did. In addition: when mixing gypsum, you should crush the caked gypsum by hand. If your skin is not very good, you'd better wear gloves. I didn't wear gloves at that time, and my hands have cracked every winter since then. ......