Well Im using my step dads craftsman gas wire feed mig. But ive been runing the gas (75/25) arund 20 psi, but My dad that welds all the ------- time says crank it up to 35psi and it will weld better. Just wondering what you guys run your gas at?

 

You don't trust your dad? He's probably pretty good at it.

 

I run between 17-18 cf on my mig.

 

+1 on 17-18 cf. i have thought about turning it up to see if things might get better, but the power in my garage is unstable and causes some shitty welds. if i plug the welder into my house i get awesome welds

 

You shouldn't need more than 20cfm on something like that

 

16cfm indoors

20 outdoors

25+ on a windy day

as long as you dont get spatter all over the place you should be fine.

YOu should get the power fixed in your garage. It cant be good for the welder.

 

You don't run psi (------- idiot)
15-20cf (non helium) is the norm for these size welders.
.030, and under 1/8" CS use 10-15
.030, and under 1/8" SS use 15-20

and your dad is stupid. you might aswell not use shielding gas at all at that point. its so turbulent coming off the cup you're simply swirling air into the arc.

 

on anything beside a fillet weld (flanges, brackets) i run 20-22cfh on tri-mix
on fillets i can get away w/ 12-15cfh because the material keeps the gas inplace for you

 

horse beat to death, but here's my $.02

On Stainless i run 20
Mild, i run 15 until the gas gets low, and i'm a cheap *** S.O.B. So i turn it down to 10 cuz i dont wanna refill soon.

But like it says, Indoors you can turn it down until you get spatter, then turn it up a couple.