This is a new version of the excellent quick-fit x-carriage from Richrap :)I tried to make it smaller so I designed the fixation to be perpendicular to the X axis and won around 3cm, it's not a big deal but 3cm on a 22x22cm build plate is really huge.Here is a LM10UU version http://www.thingiverse.com/thing:24986Original Carriage:Low profile is:So stay update :)Update Septembre 13th:Update June 19th:Update June 8th:Update:These instructions are most like the original thing as I kept the concept and the same fixations so :)Both parts print vertically, join them together with 20mm M3 bolts.The Linear bearings slide in with press fit (no tie required, need more test, but for now it works well without)It has a belt adjuster on one side of the belt clampsYou need two x M4 (13mm) 624 bearings for the Quick-Fit Lever.This quick-fit features two "quick-fit" fan mounts :)