About this 3D model

Solves the following problems:mounted horizontally to improve clearanceprevents motor collision on left side at 0mm X above ~50mm Znow only collides frame on right if you go past 160mm X and above 90mm Zhot end now centered in carriagecan now be removed from carriage without having to dissasemble firstmakes it look like a miniature version of Adrian\'s extruder (hey it's a feature to me!)