Set up, operate, or tend welding machines that join or bond components to fabricate metal products or assemblies., Give directions to other workers regarding machine set-up and use., Correct problems by adjusting controls or by stopping machines and opening holding devices., 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., Lay out, fit, or connect parts to be bonded, calculating production measurements, as necessary., Conduct trial runs before welding, soldering, or brazing, and make necessary adjustments to equipment., Remove completed workpieces or parts from machinery, using hand tools., Select, position, align, and bolt jigs, holding fixtures, guides, or stops onto machines, using measuring instruments and hand tools., Prepare metal surfaces or workpieces, using hand-operated equipment, such as grinders, cutters, or drills., Clean, lubricate, maintain, and adjust equipment to maintain efficient operation, using air hoses, cleaning fluids, and hand tools., Tend auxiliary equipment used in welding processes., Transfer components, metal products, or assemblies, using moving equipment., Mark weld points and positions of components on workpieces, using rules, squares, templates, or scribes.