[Sonic 4K] Replacing the Z-axis

Welcome to this guide on replacing the Z-axis for Sonic 4K. The Z-axis is an essential component that enables the printer to move the building plate up and down, allowing for precise layering during the printing process. Over time, the Z-axis may become worn or damaged, leading to issues such as layer shifting or uneven prints.

In this guide, we will walk you through the steps to replace the Z-axis on your Sonic 4K, ensuring that your printer is operating at its best and producing high-quality prints.

To learn how to replace the Z-axis in Sonic 4K, watch our instructional video: Sonic 4K - Z-axis replacement

Removing the Old Z-axis

1. Turn off the printer and open the cover lid, then remove the building plate and resin vat
2. Remove the rear case by loosening the 6 screws

3.  Detach both ends of the motor connector

4. Loosen the 4 screws on the platform that is attached to the motor

5. Press the Z-axis downwards so that later the Z-axis can be removed from below

6. Turn the lead screw counterclockwise manually to elevate the L-plate
7. To prevent the anti-backlash nut from popping out, press it while turning the screw when the L-plate is almost at the top

8. Check that the L-plate is loose from the lead screw

DO NOT move the L-plate too far up and off the rails as it may damage the Z-axis

9. Take the old Z-axis from inside the printer

Installing the New Z-axis

1. Put the new Z-axis in place from inside the printer
2. To screw in the bearing sleeve, turn the new Z-axis clockwise while pressing the anti-backlash nut
3. Tighten the 4 screws on the platform that is attached to the motor
4. Install the rear case by tightening the 6 screws