Welding Aluminized Exhaust

If I hadnt bought the machine when I did I would have bought something like a Hobart Handler 135, Lincoln, Miller around that amperage but they werent out yet at the time. and at the time after burning up 2 lesser machines for which Id spent more between those 2 than my Miller cost me I was wishing Id have bought the Miller sooner.... one was an "astro" which was the original "home handyman DIY" type machine.
Then I bought a Century (which I believe is/was part of Lincoln welders) that a grand dad had bought for his 2 grandsons that showed interest in welding via high school shop but once they had "their own", Gramps said he didnt think theyd even fired it up twice. It looked brand new. but I burnt that one out too. so I was tired of "cheap" welders at that point. I dont use it as much as I used to, but definitely enough for it to earn its keep.....