Turn and press knobs and buttons or enter operating instructions into computers to adjust and start welding machines., Load or feed workpieces into welding machines to join or bond components., Record operational information on specified production reports., Start, monitor, and adjust robotic welding production lines., Dress electrodes, using tip dressers, files, emery cloths, or dressing wheels., Observe meters, gauges, or machine operations to ensure that soldering or brazing processes meet specifications., Select torch tips, alloys, flux, coil, tubing, or wire, according to metal types or thicknesses, data charts, or records., 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., Devise or build fixtures or jigs used to hold parts in place during welding, brazing, or soldering., Fill hoppers and position spouts to direct flow of flux or manually brush flux onto seams of workpieces., Add chemicals or materials to workpieces or machines to facilitate bonding or to cool workpieces., Anneal finished workpieces to relieve internal stress., Immerse completed workpieces into water or acid baths to cool and clean components.