The file 'Prusa X Carriage With Slim LM8UU Holder 3D Printer Model' is (scad,stl) file type, size is 87.7KB.
I highly recommend using the further improved design at http://www.thingiverse.com/thing:18657, that jonaskuehling uploaded recently
Prusa Mendel x carriage using 4 lm8uu linear bearings in screw-fastened holders for easy (dis-)assembly. No zipties, no fragile and imprecise snap-in-brackets.
I didn't like the snap-fit bearing holders in Greg Frosts's x carriage for the same reason why jonaskuehling made the slim LM8UU holder derivate. So I modified Greg's carriage and integrated the new bearing holders for an easy-to-disassemble x carriage.
I attached the OpenSCAD files including Greg's configuration for some variables and Jonas' lm8uu-holder. I tidied up the source code a bit, but there are still some unnecessary lines left over from greg's code. The code is not overly clean and parametric due to the lack of time.
UPDATE 31.01.2012
UPDATE 03.02.2012
configuration.scad | 2.0KB | |
lm8uu-holder-slim.scad | 3.9KB | |
simonkuehling_x-carriage_lm8uu.scad | 7.0KB | |
simonkuehling_x-carriage_lm8uu.stl | 205.6KB | |
simonkuehling_x-carriage_lm8uu_fanmount.stl | 226.7KB |