I was looking for a mount to hold my gopro hero 3 silver on my reprappro mendel and came a cross the one by Mickeshobby http://www.thingiverse.com/thing:124126 I liked the idea but wanted to be able to use the camera on the clip in base so used Mikael's as a starting point and using the flat mount from Mark133 http://www.thingiverse.com/thing:40282 I created my mount.
It would clamp on to any 8mm diameter rod.
need 2 off m5 nuts and I used 2 M5 x 15mm button head screws to fit clamp to machine
The frame the camera is mounted in is http://www.thingiverse.com/thing:212082 which is a scaled down version of the one Deersign made which is a better fit for me, YMMV
Hope you like it.
I printed mine at 0.3 layer height and 60% fill but would probable be fine at less fill than that.
I printed with a raft, the curve is ok but the under side of the clip would not print on my machine without support.
when printed I cleaned up the underside of the rails with a file until the camera slid in nicely ( took a bit of time)