RepRap reworked - Upper Section

My own re-work over standar reprap. Changed linear bearings to open-v wheels. Quite smooth! All pieces available in Tinkercad. Will post them here later

The goal behind this printer is just to show what I've achieved reworking the original model took from here: https://www.schaalbouw.nl/projects/3d.htm
And maybe you can take some ideas from here too :)

Z-Axis bars are 13mm
Z-Axis threaded rods are 8mm
X-Axis bars are 8mm

Z-Axis has a kind of oldham coupler, to avoid wobbling, it's a pretty simple principle and works just perfect.

SECOND PART HERE:
https://www.thingiverse.com/thing:2454278

PLATFORM HERE:
https://www.thingiverse.com/thing:2454294

Tinkercad model:
https://www.tinkercad.com/things/7ZcLejxWrWM-reprap-carlozzi-upper-module