Oh woah, that's really neat. Is it all really just paper? Looks like rusted iron from your pictures. And the threading is an interesting touch. I'm thinking about finding a way to get into metalworking or some other sculpting medium where I can make things on a larger plane than, say, a sculpture of a person. I wonder what my college's art dept. will have to offer.
It is indeed paper, I did some mixed spray-painting to try and get that rusted iron effect - which is cool because that means I musta done it right. That would be cool. I would also see if they have their own paper-cutting machine, or even a 3D printer - we have the latter at my University and I'm dying to get some free-time to try it out. If you want to do metalworking, try smithing. Manliest shit on the planet.
Sounds manly, you know, in a Runescape way. I'll let you know how it goes. Similar to my 4th through 6th grades, if it is in fact consistent with Runescape.