Bozardeux, a recent French graduate and Instructables user, has undertaken a project to make an open, 3D printed
DSLR camera. All the parts and designs are licensed CC Attibution-ShareAlike.
The OpenReflex is an Open-Source analog camera with a mirror Viewfinder and an awesome finger activated mechanic shutter (running ~ 1/60°s). What's more, it's compatible with any photographic lens with custom mount ring.
All the pieces easily printable on any recent RepRap-like ABS 3D-printer without using support material ! Everything should print in less than 15h and anyone should be able to assemble it within 1h.
All parts are separate ( Film receiver, Shutter and Viewfinder ) to simplify builds and modifications.
The source files are available under the CreativeCommon By-Sa license, fell free to modify them if you want a new feature, and don't forget to share your improvements on the web ;)