Welders - Main Welders Welders use gas torches or machines to permanently join metal parts.
Welders work by hand or by machine when welding.
When working manually, welders control all of the work. In semiautomatic welding, the welder uses machinery, such as a wire feeder, to perform welding tasks. Welders start by reading specifications or drawings. If the metal is damaged and needs repair, they analyze the damage. Welders use their knowledge of metals and welding when planning their work.