Jewellers fabricate and repair various jewellery articles. They create models from wax or metal and they may undertake the casting process (place wax model in casting ring, create moulds, pour molten metal into mould, or operate centrifugal casting machine to cast articles). Jewellers also cut, saw, file, and solder pieces of jewellery together, using a soldering torch, carving tools and hand tools and polish the article.