Investment Casting uses a mold that has been produced by surrounding an expendable pattern with a refractory slurry that sets at room temperature. The pattern (usually of wax or plastic) is then melted or burned out, leaving the mold cavity. Investment casting is also known as the “lost-wax process”and as “precision casting”.

In sand casting, wood or metal pattern are used to make the impression in the molding material. The pattern can be re-used, but the mold is expendable. In Investment casting, a metal pattern die is used to produce the patterns, which, in turn, are used to produce ceramic molds. Both the pattern and molds are...Read more