Job Duties Custom List 51-4041.00 — Machinists
- Fit and assemble parts to make or repair machine tools.
Occupations with related tasks Save Table: XLSX CSV
| Closely Related Tasks | All Related Tasks | Job Zone | Code | Occupation |
| 1 | 1 | 3 | 51-7031.00 | Model Makers, Wood |
| 1 | 1 | 3 | 51-4061.00 | Model Makers, Metal and Plastic |
| 1 | 1 | 3 | 51-4111.00 | Tool and Die Makers |
| 1 | 1 | 2 | 51-4194.00 | Tool Grinders, Filers, and Sharpeners |
| 1 | 1 | 2 | 51-9012.00 | Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders |
| 1 | 1 | 2 | 51-4122.00 | Welding, Soldering, and Brazing Machine Setters, Operators, and Tenders |
- Build jigs that can be used as guides for assembling oversized or special types of box shooks.
- Verify dimensions and contours of models during hand-forming processes, using templates and measuring devices.
- Read blueprints, drawings, or written specifications, and consult with designers to determine sizes and shapes of patterns and required machine setups.
- Set up, operate, and adjust a variety of woodworking machines such as bandsaws and planers to cut and shape sections, parts, and patterns, according to specifications.
- Fit, fasten, and assemble wood parts together to form patterns, models, or sections, using glue, nails, dowels, bolts, screws, and other fasteners.
- Trim, smooth, and shape surfaces, and plane, shave, file, scrape, and sand models to attain specified shapes, using hand tools.
- Select wooden stock, determine layouts, and mark layouts of parts on stock, using precision equipment such as scribers, squares, and protractors.
- Construct wooden models, patterns, templates, full scale mock-ups, and molds for parts of products and production tools.
- Mark identifying information on patterns, parts, and templates to indicate assembly methods and details.
- Plan, lay out, and draw outlines of units, sectional patterns, or full-scale mock-ups of products.
- Fabricate work aids such as scrapers or templates.
- Maintain pattern records for reference.
- Issue patterns to designated machine operators.
- Finish patterns or models with protective or decorative coatings such as shellac, lacquer, or wax.
- Build jigs that can be used as guides for assembling oversized or special types of box shooks.
- Devise and construct tools, dies, molds, jigs, and fixtures, or modify existing tools and equipment.
- Study blueprints, drawings, and sketches to determine material dimensions, required equipment, and operations sequences.
- Inspect and test products to verify conformance to specifications, using precision measuring instruments or circuit testers.
- Drill, countersink, and ream holes in parts and assemblies for bolts, screws, and other fasteners, using power tools.
- Cut, shape, and form metal parts, using lathes, power saws, snips, power brakes and shears, files, and mallets.
- Set up and operate machines, such as lathes, drill presses, punch presses, or bandsaws, to fabricate prototypes or models.
- Rework or alter component model or parts as required to ensure that products meet standards.
- Grind, file, and sand parts to finished dimensions.
- Program computer numerical control (CNC) machines to fabricate model parts.
- Lay out and mark reference points and dimensions on materials, using measuring instruments and drawing or scribing tools.
- Align, fit, and join parts, using bolts and screws or by welding or gluing.
- Use computer-aided design (CAD) and computer-aided manufacturing (CAM) software or hardware to fabricate model parts.
- Assemble mechanical, electrical, and electronic components into models or prototypes, using hand tools, power tools, and fabricating machines.
- Consult and confer with engineering personnel to discuss developmental problems and to recommend product modifications.
- Record specifications, production operations, and final dimensions of models for use in establishing operating standards and procedures.
- Wire and solder electrical and electronic connections and components.
- Devise and construct tools, dies, molds, jigs, and fixtures, or modify existing tools and equipment.
- Fit and assemble parts to make, repair, or modify dies, jigs, gauges, and tools, using machine tools, hand tools, or welders.
- Verify dimensions, alignments, and clearances of finished parts for conformance to specifications, using measuring instruments such as calipers, gauge blocks, micrometers, or dial indicators.
- Set up and operate conventional or computer numerically controlled machine tools such as lathes, milling machines, or grinders to cut, bore, grind, or otherwise shape parts to prescribed dimensions and finishes.
- Visualize and compute dimensions, sizes, shapes, and tolerances of assemblies, based on specifications.
- Study blueprints, sketches, models, or specifications to plan sequences of operations for fabricating tools, dies, or assemblies.
- Inspect finished dies for smoothness, contour conformity, and defects.
- Select metals to be used from a range of metals and alloys, based on properties such as hardness or heat tolerance.
- Lift, position, and secure machined parts on surface plates or worktables, using hoists, vises, v-blocks, or angle plates.
- File, grind, shim, and adjust different parts to properly fit them together.
- Smooth and polish flat and contoured surfaces of parts or tools, using scrapers, abrasive stones, files, emery cloths, or power grinders.
- Measure, mark, and scribe metal or plastic stock to lay out machining, using instruments such as protractors, micrometers, scribes, or rulers.
- Conduct test runs with completed tools or dies to ensure that parts meet specifications, making adjustments as necessary.
- Design jigs, fixtures, and templates for use as work aids in the fabrication of parts or products.
- Cut, shape, and trim blanks or blocks to specified lengths or shapes, using power saws, power shears, rules, and hand tools.
- Set up and operate drill presses to drill and tap holes in parts for assembly.
- Develop and design new tools and dies, using computer-aided design software.
- Set pyrometer controls of heat-treating furnaces and feed or place parts, tools, or assemblies into furnaces to harden.
- Fit and assemble parts to make, repair, or modify dies, jigs, gauges, and tools, using machine tools, hand tools, or welders.
- Fit parts together in pre-assembly to ensure that dimensions are accurate.
- Monitor machine operations to determine whether adjustments are necessary, stopping machines when problems occur.
- Inspect, feel, and measure workpieces to ensure that surfaces and dimensions meet specifications.
- Study blueprints or layouts of metal workpieces to determine grinding procedures, and to plan machine setups and operational sequences.
- Select and mount grinding wheels on machines, according to specifications, using hand tools and applying knowledge of abrasives and grinding procedures.
- Compute numbers, widths, and angles of cutting tools, micrometers, scales, and gauges, and adjust tools to produce specified cuts.
- Turn valves to direct flow of coolant against cutting wheels and workpieces during grinding.
- Set up and operate grinding or polishing machines to grind metal workpieces, such as dies, parts, and tools.
- Dress grinding wheels, according to specifications.
- File or finish surfaces of workpieces, using prescribed hand tools.
- Perform basic maintenance, such as cleaning and lubricating machine parts.
- Remove finished workpieces from machines and place them in boxes or on racks, setting aside pieces that are defective.
- Remove and replace worn or broken machine parts, using hand tools.
- Attach workpieces to grinding machines and form specified sections and repair cracks, using welding or brazing equipment.
- Duplicate workpiece contours, using tracer attachments.
- Inspect dies to detect defects, assess wear, and verify specifications, using micrometers, steel gauge pins, and loupes.
- Place workpieces in electroplating solutions or apply pigments to surfaces of workpieces to highlight ridges and grooves.
- Straighten workpieces and remove dents, using straightening presses and hammers.
- Fit parts together in pre-assembly to ensure that dimensions are accurate.
- Assemble fittings, valves, bowls, plates, disks, impeller shafts, or other parts to prepare equipment for operation.
- Dump, pour, or load specified amounts of refined or unrefined materials into equipment or containers for further processing or storage.
- Operate machines to process materials in compliance with applicable safety, energy, or environmental regulations.
- Monitor material flow or instruments, such as temperature or pressure gauges, indicators, or meters, to ensure optimal processing conditions.
- Turn valves or move controls to admit, drain, separate, filter, clarify, mix, or transfer materials.
- Set up or adjust machine controls to regulate conditions such as material flow, temperature, or pressure.
- Examine samples to verify qualities such as clarity, cleanliness, consistency, dryness, or texture.
- Start agitators, shakers, conveyors, pumps, or centrifuge machines.
- Inspect machines or equipment for hazards, operating efficiency, malfunctions, wear, or leaks.
- Collect samples of materials or products for laboratory analysis.
- Communicate processing instructions to other workers.
- Turn valves to pump sterilizing solutions or rinse water through pipes or equipment or to spray vats with atomizers.
- Maintain logs of instrument readings, test results, or shift production for entry in computer databases.
- Remove clogs, defects, or impurities from machines, tanks, conveyors, screens, or other processing equipment.
- Clean or sterilize tanks, screens, inflow pipes, production areas, or equipment, using hoses, brushes, scrapers, or chemical solutions.
- Measure or weigh materials to be refined, mixed, transferred, stored, or otherwise processed.
- Test samples to determine viscosity, acidity, specific gravity, or degree of concentration, using test equipment such as viscometers, pH meters, or hydrometers.
- Install, maintain, or repair hoses, pumps, filters, or screens to maintain processing equipment, using hand tools.
- Connect pipes between vats and processing equipment.
- Remove full containers from discharge outlets and replace them with empty containers.
- Pack bottles into cartons or crates, using machines.
- Assemble fittings, valves, bowls, plates, disks, impeller shafts, or other parts to prepare equipment for operation.
- Devise or build fixtures or jigs used to hold parts in place during welding, brazing, or soldering.
- Inspect, measure, or test completed metal workpieces to ensure conformance to specifications, using measuring and testing devices.
- Read blueprints, work orders, or production schedules to determine product or job instructions or specifications.
- Assemble, align, and clamp workpieces into holding fixtures to bond, heat-treat, or solder fabricated metal components.
- Set up, operate, or tend welding machines that join or bond components to fabricate metal products or assemblies.
- Lay out, fit, or connect parts to be bonded, calculating production measurements, as necessary.
- Correct problems by adjusting controls or by stopping machines and opening holding devices.
- Give directions to other workers regarding machine set-up and use.
- Select, position, align, and bolt jigs, holding fixtures, guides, or stops onto machines, using measuring instruments and hand tools.
- Mark weld points and positions of components on workpieces, using rules, squares, templates, or scribes.
- Transfer components, metal products, or assemblies, using moving equipment.
- Clean, lubricate, maintain, and adjust equipment to maintain efficient operation, using air hoses, cleaning fluids, and hand tools.
- Prepare metal surfaces or workpieces, using hand-operated equipment, such as grinders, cutters, or drills.
- Conduct trial runs before welding, soldering, or brazing, and make necessary adjustments to equipment.
- Remove completed workpieces or parts from machinery, using hand tools.
- Tend auxiliary equipment used in welding processes.
- Load or feed workpieces into welding machines to join or bond components.
- Observe meters, gauges, or machine operations to ensure that soldering or brazing processes meet specifications.
- Turn and press knobs and buttons or enter operating instructions into computers to adjust and start welding machines.
- Compute and record settings for new work, applying knowledge of metal properties, principles of welding, and shop mathematics.
- Set dials and timing controls to regulate electrical current, gas flow pressure, heating or cooling cycles, or shut-off.
- Record operational information on specified production reports.
- Select torch tips, alloys, flux, coil, tubing, or wire, according to metal types or thicknesses, data charts, or records.
- Fill hoppers and position spouts to direct flow of flux or manually brush flux onto seams of workpieces.
- Start, monitor, and adjust robotic welding production lines.
- Add chemicals or materials to workpieces or machines to facilitate bonding or to cool workpieces.
- Immerse completed workpieces into water or acid baths to cool and clean components.
- Dress electrodes, using tip dressers, files, emery cloths, or dressing wheels.
- Anneal finished workpieces to relieve internal stress.
- Devise or build fixtures or jigs used to hold parts in place during welding, brazing, or soldering.
