A caster works in a foundry, which is a place that is specifically designed to handle hot metals. There is a central fire area or forge that allows for the heating of the metal to make it liquid. A caster then takes the molten liquid metal and pours it into casts or molds to form metal shapes that are then sanded, grinded, and polished before being finished. A caster works with all types of metals and different molds. Some casters make their own molds or casts from different materials such as metal, wax, and sand. Metals casters work with all types of metals to produce different molded shapes.