FanDuck uDelta more simple

The most simple way for have a good fan coolong. Just 1 screw M3 forthe fan in the head of delta (in the other fan) and 1 screw M4 for the rotation. You canchange teh position of the fan if you want - just invert the "attach" piece and you have an other distance...! Yeap I faignant, it's boring to wait long time for have just a fan