When two or more pieces of glass are heated in a kiln, the result is a single piece of fused glass. Glass fusing is an art form. Plates, tiles, bowls, jewelry, wall hangings, and other artistic creations are all made from fused glass. To make a finished piece of fused glass, all you need is a kiln and a few basic tools. Bulk production of vessels and other objects that are difficult or impossible to fabricate in a kiln uses glass blowing. Using a large furnace to melt the glass and a variety of other tools is necessary for glass blowing. Glass is cast in a mold, kiln-fired, and then coldworked with grinding and polishing equipment to create a three-dimensional sculpture. A torch is used in glass flameworking to create a finished object, but the process can only handle smaller items.