X-carriage Prusa i3 reloaded, by Chema

A little modification to Prusa's i3 x-carriage: the belt is at 12mm pulley position and the tooth belt is for GT2 belts.

Instructions

Now you have the scad file, parametric, you can change the heigh position of the belt retainer (to raise with your pulley), or the space between extruder holes (30mm or 24mm)