Thanks for the help guys. After going back to the welding store and changing out guns with the same results we decided to change wire to 4043 and got a much cleaner weld. The tech did find the grounding plate in the gun didn't have any tension on it so he changed that out but not sure of it had anyt...

I have a miller 252 with the aluminum package I use it to do small things around the shop. We started to make an aluminum frames for a table but can't get the weld to clean up. I've been to two different welding supply places and had a tech come to the shop with no answers. The setup we are using 3/...