So I just bought a diversion 180 (great machine!) and I'm currently taking welding at the local college.

Anyways. I can do great beads on what I'm working with flat aluminum, but I want to weld my intercooler piping up so I won't have to use couplings. I'm not sure how to tac it with tig yet (I haven't had much practice other than flat beads) and I'm not sure what heat to use on such thin aluminum. It's 2.5" and 3" piping but it's thin walled so any suggestions on either of those?

Thanks!

 

Didn't mean to double post sorry.