How Do You Make A Cast Mold?
Creating identical copies of existing objects or parts is a professional-level task, but can also be done at home by any beginner. This process is called casting, and consists of pouring a material like plastic, rubber or latex into a mold to harden. In order to cast, however, you will need to first make a mold that is best suited to the object you are casting. One of the simplest mold materials is plaster, which is best suited to copying clay objects. To make your own plaster cast mold, follow the instructions in this article. Sculpt a model object out of clay, or choose an existing model object in another non-porous material. If you are working in clay, coat the sculpture with a clear sealer like Krylon Crystal Clear. If you are not working in clay, coat your model object with a mold release agent. Let the model dry completely. Find the middle line of your model, all the way around it, that splits your model into two parts. Along this line, create a thin wall of modeling clay that se
