About this 3D model

This is based on Greg's x-carriage with fan mount modified by binaryconstruct. I've made a few modifications: - Removed 1 linear bearing, leaving only 3 as the new It2 Prusa; - Added another fan mount on the other side of the x-carriage; - Minor adjustments on the model (removed unused holes, etc); - Adjusted the clamps for my GT2 2mm belt;