# Welders, Cutters, Solderers, and Brazers > Use hand-welding, flame-cutting, hand-soldering, or brazing equipment to weld or join metal components or to fill holes, indentations, or seams of fabricated metal products. - Code: 51-4121.00 (O*NET-SOC; SOC 2018 51-4121) - Family: [Production](https://foundation.org.ai/occupations#family-51), one of its 114 occupations - Tasks: 30 tasks (21 core, 8 supplemental and 1 not rated) - Page: https://foundation.org.ai/occupations/51-4121.00 - JSON: https://foundation.org.ai/data/tasks/51-4121.00.json ## What the work is made of 1. Operate safety equipment and use safe work habits. Core task · Task 23583 · Rated by 65 people who do the job, August 2022 2. Examine workpieces for defects and measure workpieces with straightedges or templates to ensure conformance with specifications. Core task · Task 23584 · Rated by 64 people who do the job, August 2022 3. Weld components in flat, vertical, or overhead positions. Core task · Task 23582 · Rated by 64 people who do the job, August 2022 4. Detect faulty operation of equipment or defective materials and notify supervisors. Core task · Task 23600 · Rated by 63 people who do the job, August 2022 5. Recognize, set up, and operate hand and power tools common to the welding trade, such as shielded metal arc and gas metal arc welding equipment. Core task · Task 23585 · Rated by 65 people who do the job, August 2022 6. Select and install torches, torch tips, filler rods, and flux, according to welding chart specifications or types and thicknesses of metals. Core task · Task 23587 · Rated by 63 people who do the job, August 2022 7. Mark or tag material with proper job number, piece marks, and other identifying marks as required. Core task · Task 23592 · Rated by 64 people who do the job, August 2022 8. Determine required equipment and welding methods, applying knowledge of metallurgy, geometry, and welding techniques. Core task · Task 23590 · Rated by 63 people who do the job, August 2022 9. Prepare all material surfaces to be welded, ensuring that there is no loose or thick scale, slag, rust, moisture, grease, or other foreign matter. Core task · Task 23594 · Rated by 65 people who do the job, August 2022 10. Align and clamp workpieces together, using rules, squares, or hand tools, or position items in fixtures, jigs, or vises. Core task · Task 23596 · Rated by 61 people who do the job, August 2022 11. Connect and turn regulator valves to activate and adjust gas flow and pressure so that desired flames are obtained. Core task · Task 23589 · Rated by 64 people who do the job, August 2022 12. Position and secure workpieces, using hoists, cranes, wire, and banding machines or hand tools. Core task · Task 23599 · Rated by 64 people who do the job, August 2022 13. Melt and apply solder along adjoining edges of workpieces to solder joints, using soldering irons, gas torches, or electric-ultrasonic equipment. Core task · Task 23602 · Rated by 61 people who do the job, August 2022 14. Monitor the fitting, burning, and welding processes to avoid overheating of parts or warping, shrinking, distortion, or expansion of material. Core task · Task 23591 · Rated by 63 people who do the job, August 2022 15. Grind, cut, buff, or bend edges of workpieces to be joined to ensure snug fit, using power grinders and hand tools. Core task · Task 23603 · Rated by 60 people who do the job, August 2022 16. Weld separately or in combination, using aluminum, stainless steel, cast iron, and other alloys. Core task · Task 23586 · Rated by 62 people who do the job, August 2022 17. Chip or grind off excess weld, slag, or spatter, using hand scrapers or power chippers, portable grinders, or arc-cutting equipment. Core task · Task 23593 · Rated by 64 people who do the job, August 2022 18. Develop templates and models for welding projects, using mathematical calculations based on blueprint information. Core task · Task 23597 · Rated by 63 people who do the job, August 2022 19. Repair products by dismantling, straightening, reshaping, and reassembling parts, using cutting torches, straightening presses, and hand tools. Core task · Task 23604 · Rated by 64 people who do the job, August 2022 20. Clean or degrease parts, using wire brushes, portable grinders, or chemical baths. Core task · Task 23601 · Rated by 64 people who do the job, August 2022 21. Hammer out bulges or bends in metal workpieces. Core task · Task 23608 · Rated by 64 people who do the job, August 2022 22. Check grooves, angles, or gap allowances, using micrometers, calipers, and precision measuring instruments. Supplemental task · Task 23605 · Rated by 63 people who do the job, August 2022 23. Melt and apply solder to fill holes, indentations, or seams of fabricated metal products, using soldering equipment. Supplemental task · Task 23609 · Rated by 61 people who do the job, August 2022 24. Ignite torches or start power supplies and strike arcs by touching electrodes to metals being welded, completing electrical circuits. Supplemental task · Task 23588 · Rated by 63 people who do the job, August 2022 25. Guide and direct flames or electrodes on or across workpieces to straighten, bend, melt, or build up metal. Supplemental task · Task 23598 · Rated by 64 people who do the job, August 2022 26. Use fire suppression methods in industrial emergencies. Supplemental task · Task 23610 · Rated by 64 people who do the job, August 2022 27. Preheat workpieces prior to welding or bending, using torches or heating furnaces. Supplemental task · Task 23595 · Rated by 65 people who do the job, August 2022 28. Set up and use ladders and scaffolding as necessary to complete work. Supplemental task · Task 23607 · Rated by 64 people who do the job, August 2022 29. Operate metal shaping, straightening, and bending machines, such as brakes and shears. Supplemental task · Task 23606 · Rated by 64 people who do the job, August 2022 30. Analyze engineering drawings, blueprints, specifications, sketches, work orders, and material safety data sheets to plan layout, assembly, and operations. 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