About this 3D model

I tweaked the fan mount from http://www.thingiverse.com/thing:104688 I love it but added some usefull mods: -Easy mount without fully unscrew the extruder screws. -Added a housing for the nut M3 -Added a little more gap between mobile bracket. *5/Dec/2013 Added link to more compatible fan ducts. *27/Nov/2013 Added a beter fan duct for my J-head MKV (duct1.stl) See pictures: PLA position (cold PLA and HotEnd) and ABS position (cold HotEnd) compatible also with these fan ducts: http://www.thingiverse.com/thing:196463 http://www.thingiverse.com/thing:137673 http://www.thingiverse.com/thing:104688