A professional who tends multiple-spindle automatic screw machine that bores, turns, or threads plastic or rubber tubing stock to form barrels of pens and pencils. Responsibilities include:

• Positions and secures tools in toolholders following job order and verbal instructions, using wrenches.
• Positions and secures bar stock in chuck.
• Starts machine and engages automatic feed.
• Spot checks conformance of completed workpiece to specifications, using dial and fixed gauges.