Lump hammer

A lump hammer

A lump hammer or club hammer is a heavy one-handed hammer with a double-faced head. It is useful for light demolition work, driving masonry nails, and for use with a steel chisel when cutting stone or metal. In this last application, its weight drives the chisel more deeply into the material being cut than lighter hammers.

Weights range from 0.5 kg to 3 kg. The head is normally a heat treated forged steel, and handles are normally wood, usually hickory, or synthetic resin. Some hammers have a steel handle with both head and handle forged as a single piece, but these are known to have injury potential for frequent users due to shock transmission.