[Sonic Mini 8K] Replacing the Z-axis

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 guide you through important steps to replace the Z-axis of your Sonic Mini 8K, ensuring that your printer is operating at its best and producing high-quality prints.

1. Removing the Old Z-axis

Power down and Prepare

• Turn off the printer and unplug it
• Remove the UV cover, resin vat, and building plate
• Loosen the two screws and remove the plastic plate located on top

• Loosen the 8 screws on the T-plate

• Turn the lead screw counterclockwise to remove the T-plate 
• Secure the sliding guide with tape to prevent it from moving during the replacement process

Remove the bottom case and the Z-axis

• Carefully lay the printer down on a flat surface
• Loosen the 4 screws on the bottom case and open it

• Gently unplug the LED connector and remove the bottom case
• Loosen the 2 screws on the platform that is attached to the motor
• Take the Z-axis out of the printer
• Loosen the 2 screws that secure the shock absorber

2. Installing the New Z-axis

Install the new Z-axis

• Tighten the new shock absorber and secure the motor in place
• Put the Z-axis in its position inside the printer
• Tighten the 2 screws on the platform that is attached to the motor
• If you need to replace the slide rail, loosen the 5 screws located on the rail

• Attach the LED connector to the mainboard 
• Tighten the 4 screws to reinstall the bottom case securely
• Remove the tape
• Put the T-plate back and turn the new lead screw clockwise to secure it in place
• Tighten the two screws and reinstall the plastic plate located on top
• Reinstall the building plate, resin vat, UV cover
• Turn the printer upright

Verify the Z-axis functionality

• Plug in the power cord and switch on the printer
• Run Z-calibration to verify if the Z-axis works normally

Contact Support

By following the above instruction, you can easily replace the Z-axis of your Sonic Mini 8K printer. If you find any issues, feel free to reach out to Phrozen Support or your Authorized Reseller for further assistance. When contacting Phrozen Support, kindly send some photos or videos illustrating the issue.