With a Mig/Spoolgun setup you are welding aluminum on DC with argon.............try this with tig and is goes to schit!!!What is happening............one type welds and the other doesn't!!!
Reply:Aluminum mig welding is done on reverse polarity (DCEP) tig welding is done on straight polarity (DCEN) or ac.Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Originally Posted by SquirmyPugAluminum mig welding is done on reverse polarity (DCEP) tig welding is done on straight polarity (DCEN) or ac.