Sage Werbock is a performing strongman who specializes in hauling enormous weights with his nipples. No, seriously, that's what his website indicates, although I didn't explore that section of it too far. You can do that if you want, but I'm going to focus on his blacksmithing work, and specifically, this AT-AT model that he welded together from scrap metal and old computer parts:
The main body is composed of power supply boxes from old computers, the head from floppy drive housings, legs and feet from various scrap metal. The entire piece has been welded together using the MIG welding process. Two coats of cold galvanizing primer are applied followed by a coat of varied grays and finished with two coats of protective gloss. The whole sculpture was randomly "attacked" with the welding arc to simulate battle scars.
Link via Technabob | Artist's Website