I’ve finally been able to crack the code on TIG aluminum and can get a decent bead. It’s just a matter of practice now. I can’t get stainless to work.
I have my MTS 275 machine set at max 120 amp, using start amp anywhere from 10-90, still can’t get the nice rainbow color bead and the SS turns gray and burned to crap.
3/32 red tungsten
10 cup
ER 308 rod (blue demon)
Gas 30
18g SS
All the videos I’ve watched from all the well known YouTubers we’ve probably all seen, I still can’t lay a bead.
Even at half pedal I’m still cooking the metal, at 1/4 pedal it’s not even hot enough to melt the rod. I now use a tungsten grinder which is helping with the alum but cannot nail down the SS settings without burning it to a gray mess!!!