[widebody911]

This is a tough one. You will need a MIG or TIG setup. I have a MIG - the ubiquitous Lincoln 110v model - and I bought an extra cable to do aluminum...

...and it's a PITA. The #1 problem is the resistance in the cable itself, which results in a %^!$%!%&*(&(% tangled mess inside the welder. I have to stop, untangle the wire - and throw away several feet of it - and re-feed it. I've had some success by keeping the cable as straight as possible.

The solution to this is a spool gun, which is not available for the welder I have. I can do small jobs with the setup I have and I'll just put up with the frustration. If I find myself needing to do a lot of welding, I'll upgrade to a much bigger welder with this option.

I also bought a book on welding, and while the book was mostly useless to me because I didn't understand most of the terminology, I did learn that you have to push an aluminum weld away from you, as opposed to steel, where you can go any way you feel like.