• TIG AC/DC welding machines are specifically designed to achieve perfect aluminium and aluminium alloys welding with alternating current• In DC mode they can also weld other metals such as stainless steel, mild steel, alloy steel, titanium and copper alloys• Coated electrodes – MMA welding is possible in either AC or DC with digital polarity change• With a variety of settings such as switchable HF arc ignition, 2-step/4-step/two level 4-step mode, 500 Hz DC pulse, AC pulse, 4 different AC forms and memory for operator’s own settings these machines can tackle any TIG welding job• Options include remote control, foot pedal and TIG cold wire feeder