I'm using .025, with pretty darn good penetration. I'm at a very slow wire feed, with a high heat seating.
What i'm having trouble with is the puddle (I don't get a nice puddle 20% of the time), I'll blow thru if I keep on it too long, but if i'm too brief with the arc, I don't get good penetration.
I've done everything so far (I think)
75/25 Ar/CO2
.025 MIG (i'll get the spec later)
tried several different grounds, even a magnet
prep the steel.
Should I go to a large diamete wire?
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