This is a one semester 48 hour course designed to train the student in the basic principles of TIG welding. Students will operate AC-DC transformer type welding machines. Studies will include heat ranges, polarities, and the use of wire electrodes and shielding gases. Welding will be performed on mild steel and aluminum l in flat, horizontal, and vertical positions. Safety will be emphasized throughout the course in the use of tools and equipment. Safety glasses are required.