Aah nice artworks, I think you guys should try to work with Blender3D. Blender3D is a totally free software program for 3d modeling, rendering, game creation, 3d animations and much more. It's opesource s if you know some c/c++ programming you can add your own features. I use it a lot and at the beginning it seams to be hard, but following the tutorials on there wiki page called "noob to pro" you get quite fast the hanf of it. Check http://www.blender3d.org
Keep going, maybe I'll post a sword as well some day.