I can get wanting to build things yourself. I once tried to build a deck because I thought it would be cool. It leaned so bad your lemonade would slide off the table. I have a DSLR camera, but I have a hard time just using the thing let alone building my own camera.
A French geek has decided building his own SLR camera is better than buying and did the deed. The case was fabricated in what appears to be aluminum. All of the details are in French, so I am not entirely sure what the guy used or how he pulled it off.
The thing is ugly; I can tell you that from the images. I assume he used optics from a donor camera and the lens is obviously store bought. This is quite a feat.