Sand casting is one of the oldest ways to reproduce an object by making an impression of it in sand then pouring in a liquid that becomes solid after cooling or a chemical reaction. Plaster Of Paris is a powder made from Gypsum that can be mixed with water and poured into a mold. After a chemical reaction takes place it becomes a solid that can be removed from the mold. This video will show you how to use beach sand to cast objects with Plaster Of Paris and explain the chemistry behind the hardening process.
Post time: Jun-26-2017