What's the best way to weld copper?

[Fat-Fab.com]

you have to keep in mind he is not doing structural weld but rather art work requireing only that it atach for decoration, not to hold a load. so wile all the advice is good it dose not all fit his need.

I doubt that any power source hooked into a 1 phase 220 outlet would eaven get a puddle going on standard copper pipe say 1/2" id.

Ill give it a try tomorrow on my dynasty 200 and let you know how I do.