Ultimaker bowden clamp v3

Evolution of Bowden Clamp for Ultimaker Hot end v2 (http://www.thingiverse.com/thing:27762), original design by Owen.

Source on Github : https://github.com/hugokernel/OpenSCAD_Things/tree/master/Bowden%20Clamp%20v3

4 12mm washer is required to distribute the clamping force from the bolts.

4 slots are provided below to place the nuts to hold the 2 electronic board.

More information in french here : http://www.digitalspirit.org/blog/index.php/post/2013/10/30/Nouvelle-mise-%C3%A0-jour-sur-l-Ultimaker