Camera bed mount - Logitech C910 on Wanhao Duplicator 6 or Monoprice Maker Ultimate

Modifications to my original design, different enough that I thought it might merit a remix. The big change is it is now centered, surrounding the front bed leveling screw. Thanks to Nathan Bachman (http://www.thingiverse.com/Nbachman/about) for all his input on the original design, much of which is integrated into this design.

Design features
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* Camera is now centered on the print bed, so don't have to angle the camera to accomplish this.
* Camera is held higher so it wi