Smith (metalwork)
The ancient traditional tool of the smith is a forge or smithy, which is a fire which allows compressed air (through a bellows) to heat the inside of the forge until it is hot enough for metal to become more malleable so that it can be hammered into the shape that is required.  Smith or smithy refers to the hammering onto the metal using an anvil to support the work.  Anvils come in many sizes and shapes.