Remixed from: http://www.thingiverse.com/thing:9860
Sized for 58mm lens cap & 42mm maximum strap.
The lip has been optimized for the lens cap I have, comes with the standard 58mm Rebel EOS camera. Our best results came from layer height of .2mm, but acceptable results came from .1mm. The overhang seems best at .2mm tall, our slicer broke it down to 3 layers of .1mm layers even though it's size is .2mm. So we just printed it with 1 layer of .2mm.