Yet another GEEETech Pro C fan holder

The original fan design on the GEEETech Pro C seems a bit useless. I think it would be better to move the air flow under the steppers so that the nozzles, as well as the filament that had just been extruded, could cool better and quicker.

This design is a remix of the STEV-o's fan holder and was adapted to the Pro C with MeshMixer. I'm not a 3D designer, however it will print nicely without any support.

To install it, please unscrew the fan from its original location, then screw the holder