Hey everybody, I just bought the PowerMTS 200 and am now gathering materials for a rear bumper build for the van. I have done a fair amount of stick welding, but I'm totally new to mig. I have done some research and it sounds like Argon or C25/15 is the ideal way to go, but its really not practical for me to have an Argon tank as I don't have the room. I could however have a small CO2 tank. But I am also going to be welding it outside so I'm wondering if I should just go with a flux core and no gas or if there is a flux core that would work well with CO2. I'm going with round tube mild steel 1.5"X.120" btw. Thanks a ton for any input you may have.