A professional who tends previously set up single- or multiple-spindle boring machines to perform machining operations, such as boring, counterboring, and facing metal workpieces on production basis. Respnsibilities include:

• Lifts workpiece manually or with hoist and clamps it in holding fixtures.
• Moves machine controls to feed tool into workpiece and engage feed.
• Observes machine operation and verifies conformance of bored workpiece to specifications, using measuring instruments, such as fixed gauges, calipers, and micrometers.
• Changes worn tools, using wrenches.
• May move controls to adjust cutting speeds, feed rates, and depth of cut.
• May aid machine setter in setting up machine.
• May bore or drill plastics or other nonmetallic materials.