Thanks for all the replies on micro 185. I think I'm about ready to buy the green machine, just one question,is the lowest setting of 20 amps a/c ok for .095 alu? Never tigged but I quess it would have to be better than my Miller spool gun. I mean some of the old flat bottom boat's I patch up have gotten really thin and even with a backing plate it's tough, that's why I'm looking at a tig machine and want my money to be well spent. thank's to all and have a blessed day in the LORD!