Set up and operate numerical control (magnetic- or punched-tape-controlled) machine tools that automatically mill, drill, broach, and ream metal and plastic parts. May adjust machine feed and speed, change cutting tools, or adjust machine controls when automatic programming is faulty or if machine malfunctions.

Lays out and marks areas of part to be shot-peened, and fills hopper with shot. Positions and secures workpiece on machine bed, indexing table, fixture, or dispensing or holding device. Loads control media, such as tape, card, or disk, in machine controller or enters commands to retrieve programmed instructions. Starts automatic operation of numerical control machine to machine parts or test setup, workpiece dimensions, or programming. Confers with supervisor or programmer to resolve machine malfunctions and production errors and obtains approval to continue production. Maintains machines and removes and replaces broken or worn machine tools, using hand tools. Examines electronic components for defects and completeness of laser-beam trimming, using microscope. Operates lathe, drill-press, jig-boring machine, or other machines manually or semiautomatically. Measures dimensions of finished workpiece to ensure conformance to specifications, using precision measuring instruments, templates, and fixtures. Lifts workpiece to machine manually, with hoist or crane, or with tweezers. Enters commands or manually adjusts machine controls to correct malfunctions or tolerances. Selects, measures, assembles, and sets machine tools, such as drill bits and milling or cutting tools, using precision gauges and instruments. Mounts, installs, aligns, and secures tools, attachments, fixtures, and workpiece on machine, using hand tools and precision measuring instruments. Determines specifications or procedures for tooling set-up, machine operation, workpiece dimensions, or numerical control sequences, using blueprints, instructions, and machine knowledge. Calculates and sets machine controls to position tools, synchronize tape and tool, or regulate cutting depth, speed, feed, or coolant flow. Stops machine to remove finished workpiece or change tooling, setup, or workpiece placement, according to required machining sequence. Monitors machine operation and control panel displays to detect malfunctions and compare readings to specifications. Cleans machine, tooling, and parts, using solvent or solution and rag.

Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance. Production and Processing -- Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.

Operation and Control -- Controlling operations of equipment or systems. Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly. Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Quality Control Analysis -- Conducting tests and inspections of products, services, or processes to evaluate quality or performance. Equipment Maintenance -- Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.

Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions. Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem. Wrist-Finger Speed -- The ability to make fast, simple, repeated movements of the fingers, hands, and wrists. Reaction Time -- The ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears. Number Facility -- The ability to add, subtract, multiply, or divide quickly and correctly. Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). Written Comprehension -- The ability to read and understand information and ideas presented in writing.

Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). Repairing and Maintaining Mechanical Equipment -- Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles. Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems. Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects. Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources. Evaluating Information to Determine Compliance with Standards -- Using relevant information and individual judgment to determine whether events or processes comply with laws, regulations, or standards. Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events. Making Decisions and Solving Problems -- Analyzing information and evaluating results to choose the best solution and solve problems.