Alternative base carriage for my front carriage

This is an alternative base carriage for my front carriage http://www.thingiverse.com/thing:1275203 for a Geeetech i3X. It is meant to be used with the igus bushings RJZM-01-08 or compatible copies (inner diameter 8mm, outer diameter 16mm, length 25mm). Three 10mm M3 screws are required for fixation of the bushing. If you are using all-plastic bushing don't scrw in the screws too strongly as the bushings might deform and increase friction.

Features:
- Three point clamping of the bushings
-