Arc welders are individuals who weld using an electric arc that produces intense heat, melting metal and causing it to fuse together. Synonyms for arc welders include welders, metal fabricators, fitters, and welder-fabricators. Welders primarily work in manufacturing, construction, and repair industries. Fitters align and position the welds. Welder-fabricators create metal products and structures based on blueprints and specifications. Arc welding is a skilled trade requiring specialized training and knowledge of safety practices. Welders must be proficient in the operation of welding equipment and have a strong understanding of metallurgy, blueprint interpretation, and welding codes and standards. Overall, the demand for skilled arc welders is strong, and the profession offers solid career opportunities and excellent earning potential.