2nd or 3rd Shift Mill Machinist. The. Mill Machinist. operates manual and/or computer-controlled machines to perform one or more machine functions on metal or plastic work pieces. Job-specific functions. Enters commands to retrieve, input, or edit computerized machine control media. Selects, aligns, and secures holding fixtures, cutting tools, attachments, accessories, and materials on machines, such as mills, lathes, and CNC. Assembles cutting t...