Set up, operate, or tend drilling machines to drill, bore, ream, mill, or countersink metal or plastic work pieces.
<ul><li>Verify conformance of machined work to specifications, using measuring instruments, such as calipers, micrometers, or fixed or telescoping gauges.</li><li>Study machining instructions, job orders, or blueprints to determine dimensional or finish specifications, sequences of operations, setups, or tooling requirements.</li><li>Change worn cutting tools, using wrenches.</li><li>Select and set cutting speeds, feed rates, depths of cuts, and cutting tools, according to machining instructions or knowledge of metal properties.</li><li>Install tools in spindles.</li><li>Move machine controls to lower tools to workpieces and to engage automatic feeds.</li><li>Position and secure workpieces on tables, using bolts, jigs, clamps, shims, or other holding devices.</li><li>Establish zero reference points on workpieces, such as at the intersections of two edges or over hole locations.</li><li>Observe drilling or boring machine operations to detect any problems.</li><li>Lift workpieces onto work tables either manually or with hoists or direct crane operators to lift and position workpieces.</li><li>Verify that workpiece reference lines are parallel to the axis of table rotation, using dial indicators mounted in spindles.</li><li>Lay out reference lines and machining locations on work, using layout tools, and applying knowledge of shop math and layout techniques.</li><li>Turn valves and direct flow of coolants or cutting oil over cutting areas.</li><li>Operate single- or multiple-spindle drill presses to bore holes so that machining operations can be performed on metal or plastic workpieces.</li><li>Perform minor assembly, such as fastening parts with nuts, bolts, or screws, using power tools or hand tools.</li></ul>