About this 3D model

I've uploaded the different parts on several "things" for more clarity : Main/Frame : http://www.thingiverse.com/thing:19368 X Axis : http://www.thingiverse.com/thing:25975 Y Axis : http://www.thingiverse.com/thing:25976 Z Axis : http://www.thingiverse.com/thing:25978 Linear bearing : http://www.thingiverse.com/thing:16946