Poltur/Prusa-i3 bearing-less x axis carriage

thingiverse

I've been using this for about a week now, and it's proven to be far more reliable than using standard LM8uu bearings commonly found in x-carriages. In terms of vibration reduction, it stands unmatched - even using the more expensive LM8uu bearings, there remains a degree of vibration as the mini ball bearings within the bearing casing travel along the axis rods. However, this carriage has zero detectable vibration, and the noise reduction is also an added benefit. Although this design features to make it compatible with my Poltur and PolturXL extruder mount designs, it's still totally compatible with standard i3 x-axis setups. I've included the STL for my extruder mount in this thing as well, since the two work excellently together. This allows users to quickly, easily, and cleanly remove the extruder mount with minimal fuss without upsetting the x & z axis calibration. In the future, after further testing and proven reliability (fingers crossed), I plan to replace the z & y axes with similar designs and ultimately eliminate the need for bearings entirely.