Metal furniture machine operators use machines and power tools to cut, shape and join metal pieces in order to produce metal furniture ranging from office furnishings to outdoors fittings. They use different types of metal such as aluminium, iron and stainless steel, and different types of processes such as metal forming and casting. They polish, apply protective layers and, in some cases, decorative finishes to the metal pieces. They assemble and join the elements to obtain the final product.