What is glass casting? Sand casting: In this technique, molten glass (1250°-1350°) is ladled in beds of smelting sand containing small amounts of bentonite clay imprints that serve as molds. The moistened sand is placed in a wooden box, and stamped with a pattern is the negative of the desire effect - usually a bas-relief. A large piece requires several individuals relaying each other to make sure that there is a constant supply of glass as it is being cast, because the uniformity of the final product depends on it. The initial cooling stage is controlled to achieve an equal rate of cooling across all areas of the piece. When 600° is reached, it may be removed from the cast and brought into a annealer. This glass is usually taken straight from the furnace, and is clear in color, but it is possible to include colors if desired. Kiln casting: In kiln casting, a plaster mold is made out of wax, wood or metal and from a model. This model, frequently be made from wax, is lost by heat or steaming after it is cast in the plaster that will form the mold. The opening of this cast is filled with solid glass granules and frits. It is heated to 800-1000 C and the melting glass settles in the mold. What may I create with cast glass? architectural components table and countertops stairs doors sculptural forms What equipment is needed for cast glass? furnace ladles sand, bentonite What other techniques might I combine with glass casting? Anything that you can do to flat glass can be used to enhance stained glass. leaded glass (glass cast tiles) glass etching and polishing Enter Forums