The type of machine that they operate is how operators and set up workers are named. Metalworking machine setters and operators set-up and tend machines that cut and form all types of metal parts. The set-up workers create a plan for production. They follow blueprints, layout and other instructions. They adjust the speed and feed of controls.
Setters choose appropriate coolants or lubricants.
They use instruments and gauges to meet operating standards. Workers who melt the iron to create the steel are called foundry workers . Once the iron is melted, molders and casters are operators who release the liquid steel into machines. These machines produce rods, tubes or other desired shapes. To learn more about these two jobs see those CIS occupations.