Anet A8 Z-Axis rework

thingiverse

This rework of the Z-Axis drive system aims to eliminate the notorious z wobble and enhance Z resolution. The 1:2 gearing enables print layers that are a multiple of 0.02 - 0.04, 0.08, 0.10, 0.12 etc., in contrast to the factory system which only allows for layers that are a multiple of 0.04 - 0.08, 0.10, 0.12 etc. I have successfully printed down to a layer height of 0.04 with no noticeable Z-axis wobble present. To assemble this reworked drive system, you will need the following parts: 2 x 20T 5mm bore GT2 pulley 2 x 40T 8mm bore GT2 pulley 2 x 150mm closed GT2 belt 4 x 608zz bearings 2 x 40mm M3 screws for top mount The necessary printed components include: Motor plate (left and right). This part attaches to the existing motor mounting plate. Top bearing holder (left and right). It secures the lead screw at the top. Bottom plate (left and right). This component fastens underneath the existing motor mount plate using the holes for the motor. In the original system, the Z smooth rod was supported by the motor itself; this plate replaces that support. The top z screw holder is inspired by this design: https://www.thingiverse.com/thing:1858435