Specifically talking about working on .125" 5000 series aluminum. I am looking at a Lincoln 175 PRO. How much slower would that be vs a MIG machine with a spool gun?
Keep in mind, that the MIG process for Alum. (using spoolgun) welding is much cheaper per welded inch. Also, the spoolgun allows for out-of-position welding. Also, by slightly preheating the base metal you can achieve a nice flat bead.