Maintains specifications by observing drilling, boring, grooving, and cutting, including turning/milling, facing, knurling and threading operations; detecting malfunctions; troubleshooting processes; adjusting and reprogramming controls; replacing worn tools; adhering to quality assurance procedures and processes. Programs mills and lathes by entering instructions, including zero and reference points; setting tools, offsets, compensation; calculating requirements, including basic math, geometry, and trigonometry; proving part programs.