If you are running alum and heavy steel with your mobil business I would look at the MTS250S . It has enough power to do some pretty heavy steel. I just got one and am getting it dialed in for almost the same kind of work. I do a lot of heavy steel welding. The problem with mig is on heavy steel you get cold cracking just like you can get if you do not use low- hi rod with stick. I just got my knurled drive wheel for .045 and 1/16 flux core . I am ordering some hobart fabshield 21B in .045 for the general fab work and some hobart fabshield xlr-8 for the heavy stuff in 1/16 ( this is a low-hi wire). It will be way faster than stick welding it. Mate the MTS to a 30A gun and you will have a killer portable system for alum and steel.that is capable in the shop as well. The MTS can do stick and DC tig too when the need is there.
Last edited by TheGary; 05-03-2015 at 02:03 PM.
Miller 302 gas drive
millermatic 200 mig
miller spoolmatic 3 spool gun with 100ft ext.
2014 Everlast PP60S plasma
thermal arc 250 GTS inverter
2016 Everlast 250EX
miller tig cooler
2015 Everlast MTS250S
Miller 30A spool Gun
Miller xtreme 12VS wire feeder
Linde CM 85 shape cutter