There are two types of polymer clay: auxiliary sludge, which is used to assist the mold making, and is usually used for film splitting. Another kind of putty is used for carving, carving out the product and then opening the mold with liquid mold silicone rubber.

Liquid mold silicone rubber molding clay is used in a wide range of fields, and the products of clay carving are just one of them. There are many other products, such as wood carving, gypsum, stone carving, CNC carving, etc., which are all OK. Each of these materials has its own advantages. The reason why polymer clay is used for carving is mainly because of its low cost and ease of operation. It is not as hard as stone and wood. Of course, there is also a disadvantage, that is, wood and stone carvings are relatively easy to preserve. It is not easy to destroy the original texture of the mold in the process of mold opening. Because of this uniqueness, most of the mold types of molding sludge carving are usually used for hand boards and the like.