A professional who tends single- or multiple-spindle screw machines equipped with automatic indexing and feeding mechanisms that drill, turn, bore, thread, tap, and face metal bar stock according to specifications. Respnsibilities include:

• Loads bar stock into feeding mechanism.
• Starts machine, engages feeds, and observes machine operation.
• Changes worn cutting tools, using wrenches.
• Removes sample workpiece from machine and inspects workpiece to verify conformance to specifications, using instruments, such as preset comparator, ring and screw pinch gauges, calipers, and micrometer.
• Moves controls to adjust machine operation.
• May sharpen tools, using bench grinder.
• May machine plastic or other nonmetallic materials.