My gas supplier keeps insisting that argon/CO2 is the best gas for my Millermatic 130 MIG welder and it does work pretty well on tube but I am getting some under cut at the edges of the bead that is a pain to grind out. Now I have some 3/16" stock that requires a lot of Tee joints. I need to get my bead to flow out a bit more to make grinding a fillet easier. Would a helium/argon mix work better?
- posted
19 years ago