STONEWARE Ceramic slump mold for making a wine bottle serving dish. Hand made by Daniel Gutzwiller. These molds are not behemoths. They are as small as possible to maximize the use of kiln space. When used on stainless steel kiln shelves, 15 bottles can be slumped in just 4.2 cubic feet, for only a few dollars worth of electricity (Rates vary with location). This product is intended for industrial use only by experienced kiln forming professionals. Does not work on all shapes of wine bottles. It works best with 750ml Punted Claret / Bordeaux style bottles. Bottles known to have worked with these molds: W65, WP2, 9432, 8335, 7305. Flat bottom bottles can be slumped in the single condiment mold at lower temperatures (1320 - 1380) to prevent the bottom folding over completely.