Hammers are the shaping and striking tool of metalwork. The type and weight must match the job — a hammer that is too light requires more strikes and gives less control; one that is too heavy tires the arm and damages thin material.
Ball pein hammers are the general metalworking hammer, used for riveting, striking punches and shaping. Cross pein and straight pein are for drawing out metal. Body hammers have a face shaped for panel work, with a crown that stretches metal in a controlled way. Slag hammers and chipping hammers are for removing slag and spatter from welds, with a long tapered point that gets into the weld toe.
Weight determines the work. A 16 oz hammer is general purpose; 24-32 oz is for heavier striking; sledge hammers at 4-10 lb are for driving, not shaping. Dead blow hammers have a shot-filled head that does not bounce, which transmits more force and reduces rebound.
Handle material affects vibration and durability. Wood handles absorb vibration and are replaceable; fibreglass handles are more durable; steel handles with rubber grips transmit less shock but are heavier. The head must be securely attached — a loose head is a flying hazard.
