Clint, this is what I was told, not what I have experienced, the mix is supposed to be cooler at the point of welding contact. I used Pat Taczek's rig with aluminum wire to weld that old aluminum tool box we had on the 96 dodge 4x4 , cut and redid the bottom to fit his ford and although it was my 1st time to weld aluminum it went very well. I think you are going to love that rig as much as your plasma cutter!!!
what are you welding clint? I use to run pure co2 in my old welder ,but with the new I have now I run 75/25 with .030 wire for mild steel. I would think you would only want to run pre argon if you was welding aluminum. I know my dad runs argon in his heliarc.
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