Fuller (metalworking)

A fuller is a hand held form tool usually with a wooden handle, but often an air cooled wire handle. It resembles a hammer but is not used for striking but is struck by an appropriate sledge hammer to impart its shape to the workpiece.

Fullers are used by smiths, generally a black smith, for shaping hot work in its plastic state. They are used in conjunction with the edge of a swage block, although they may be used against the bed of an anvil or a matching socketed die held in the hardy hole.