glasgjutning

Glasgjutning, or glass casting, is a glass forming technique that involves melting glass in a mold. This process allows for the creation of intricate and detailed glass objects. The most common method is lost-wax casting, also known as cire perdue. In this technique, a wax model of the desired object is created. This wax model is then coated with a refractory material, forming a mold. Once the mold is hardened, the wax is melted and drained away, leaving a cavity in the shape of the original wax model. This cavity is then filled with molten glass.

The mold containing the molten glass is slowly cooled over an extended period, a process called annealing. Annealing is crucial to prevent the glass from cracking due to internal stresses that develop during cooling. After cooling, the outer mold material is broken away, revealing the cast glass object. Other methods of glass casting exist, including sand casting and ceramic shell casting, each with its own advantages and applications. Glass casting is used to produce a wide range of items, from decorative art pieces and sculptures to functional objects and components for lighting and jewelry. The versatility of the medium allows for a variety of colors, textures, and finishes to be achieved.