In this process, a machine performs the welding tasks while monitored by a welding machine operator. Welding machine operators set up and operate welding machines as specified by layouts, work orders, or blueprints. Operators must constantly monitor the machine to ensure that it produces the desired weld. The work of arc, plasma, and flame cutters is closely related to that of welders. However, instead of joining metals, cutters use the heat from burning gases or an electric arc to cut and trim metal objects to specific dimensions.
Cutters also dismantle large objects, such as ships, railroad cars, automobiles or aircraft.
Some operate and monitor cutting machines similar to those used by welding machine operators.