I want to weld some aluminum, probably nothing thicker than 1/8th for now. I have a Miller 175 mig machine, but the spool gun is over $600 (while the spool guns for the new 180 is less than half that ).
I would buy a new tig machine before I'd pay $600 for a spool gun.
The purpose of the spool gun is simply to get the wire closer, because aluminum wire is too soft to push through the normal mig lead, correct?
If so, has anyone even tried with a normal mig lead? It seems like if you were very careful to keep the lead as strait as possible at all times it might feed. If any one has tried what was the result and what thickness of aluminum wire were you using?
Also what thickness can I expect to be able to do with my MM175?