Autolevel Prusa Rework mod

This is the x-carriage of Prusa i3 Rework (GT-2 belt), improved with support for servo (Tower Pro SG90), and the layer fan mounted on back of this x-carriage for 50mm fan (tilt adjustable). The endstop I put in this assembly is a very tiny micro Cherry A219.
Update: I've uploaded the X-Carriage version for Igus Iglidur RJMP-01 08 linear bearings and a box enclosed the servo to protect against the heat, because it change the angle when increase the heat from the bed, doing inaccurate measures.