Originally Posted by
crazybillybob
The fact is you can weld (not braze) Aluminum with a TIG, MIG, DC buzz box (electric Arc welder) (takes a special rod), or with oxy-Acetylene (takes an aluminum specific flux, and can cause more aluminum oxide to form in the weld..untill your good at it). Now I will say that I have not welded aluminum all these ways, but I've talked with older welders that have and read the manuals that explain how it's done.... My Mig will be switched over to Aluminum here soon (need a weekend that I'm not working or moving to switch it over and play!)
The thing with aluminum is that it takes a bit more heat, and is less forgiving then welding steel... best word of advice, Preheat! Get that Aluminum up to about 250-300degF before you spark up a bead (thinner sheet doesn't need the heat, but anything over about 1/8 inch...does).
If your really interested in welding Aluminum with something other then a TIG, do a Google search on it, there are many good sites that will show you the basics.
CrazyBillyBob