Casting - Cold Moulds
This is a process where a liquid silicon rubber solution is used at room temperature. The reasons for this more involved process is that this material does not suffer from shrinkage during or after curing. Hot moulds suffer from shrinkage. However, hot moulds are better for delicate sections, and the moulds generally have a better life span subject to usage.
The main reason for cold moulds are, no shrinkage at the moulding stage, delicate materials can be moulded without damage, including hand carved waxes, and waxes and resin models produced via the Cad/Cam process. However, cold moulds do not have the same durability of hot moulds, and delicate sections are more liable to fail.
