http://www.fabathome.org/

http://video.popularmechanics.com/services/player/bcpid1213900627?bctid=1231030451

RepRap

http://reprap.org/wiki/Main_Page

Thingiverse

http://www.thingiverse.com/

Makerbot

http://www.makerbot.com/

Ultimaker

https://shop.ultimaker.com/en/

http://blog.makezine.com/2011/08/01/ultimaker-theres-a-new-3d-printer-in-town/