[DRJDVM's '69]

As for a gap.... I was told that with MIG you should have a gap about the same size as the wire diameter....always seemed a tad wide to me.... I try to shoot a bit less than that.....

So for MIG stuff....when do you hammer and dolly it? say you are doing a square patch panel 6 x 6 inches..... do 4-5 tacks per side and then hammer and dolly?....do you grind down those first tacks before you do it? hammer and dolly direct on the welds....all along the edges? work from the middle and work out.....I dont have much experiecne on the hammer and dolly stuff....