A Machine Operator sets up and operates metal fabricating machines, such as brakes, lathes, cutters, borers, millers, grinders, presses, drills, rolls, shears, saws, and presses, to cut, bend, straighten, and form metal plates, sheets, and structural shapes according to blueprints and specifications. Selects, positions, and secures dies, blades, cutters, and fixtures onto machine, using rule, square, shims, templates, hand tools and built-in gauges.