Establishes zero reference point on workpiece, such as at intersection of two edges or over hole location. Turns handwheel to adjust machine table to align spindle over point, using dial indicator. Selects and sets cutting speeds, feed rates, depth of cut, and cutting tool according to machining instructions or knowledge of metal properties. Installs tool in spindle. Turns handwheels to lower tool to workpiece and engages automatic feed.
Turns valve and directs flow of coolant or cutting oil over cutting area.
Verifies location and dimensions of holes, using measuring instruments, such as dial indicator, gauge blocks, telescoping gauge and internal micrometer. Works to tolerances as close as plus or minus 0.0001 inch. May work only from blueprint. May lay out reference lines and machining locations on workpiece, according to blueprint, using layout tools, such as rule, divider, and scriber, applying knowledge of shop mathematics and layout techniques. May fasten workpiece in holding fixture mounted on machine table or clamp jig or template in position on workpiece.