Performs a combination of welding duties such as heliarc welding, oxyacetylene cutting, plasma cutting, welding and brazing, electric arc-air cutting and gouging of metals, arc welding of various metals, sheet metal work, repair of hand tools and design and installation of hitches. An employee in this class is responsible for performing skilled work using an acetylene, heliarc, electric-arc, MIG and TIG welding unit, plasma cutter, plasma torch, grinder, and other tools to weld, cut, or fabricate ferrous and nonferrous metals.