Prusa MK3 Camera Bed Mount Arm

UPDATE 9-12-18:
It was been brought to my attention that the design was no longer compatible with the MK3's B7/R3 extruder update which tilts the front fan out at an angle, so the camera arm wasn't long enough to clear the fan when the bed moves all the way to the rear. I have added 20mm to the length of the arm so that it should clear the newly tilted fan after the R3/B7 extruder update. However I am no longer using this assembly myself, so someone will need to print this and test it. Ple