About this 3D model

This is intended for the SmartRap printer: http://www.thingiverse.com/thing:177256 I´ve based this alternative on an existing fillamentfan for hotends. http://www.thingiverse.com/thing:61407 By Brad Norman. I´ve only added the possibility to use it on a SmartRap by modifying the exising hotend holder and creating the arms. I´ve printed 3 arms for this design but I guess it would be better to use one arm in a fixed position. I liked the idea of the flexibility of three arms.