thanks for the info, i've been told by a couple of people now that same thing, thanks

i have gas that i use with my mig welder, ( 25/75 ) and i just got a tig welder and new to it, is there a gas that you can use for both mig and tig welding? or do you HAVE to use all argon? i would like to avoid having to buy another bottle ! thanks, Mark

i know you can use gas with flux core wire, but what polarity do you use? do you set your machine up as if you were using flux core or do you set it up for gas?