Principal Responsibilities: Plans machining by studying work orders, blueprints, engineering plans, materials, specifications, orthographic drawings, reference planes, locations of surfaces, and machining parameters; interpreting geometric dimensions and tolerances (GD&T)Programs mills and lathes by entering instructions, including zero and reference points; setting tool registers, offsets, compensation, and conditional switches; calculating requirements, including basic math, geometry, and trigonometry; proving part programs. Sets-up mills and lathes by installing and adjusting three-and four-jaw chucks, tools, attachments, collets, bushings, cams, gears, stops, and stock pushes; indicating vices; trimming heads.