My Tianrui filament spool holder broke when it fell to the ground during unloading, rendering the fully loaded spool unusable (it often gets stuck inside the Ams). So I printed a protective border to keep it functioning. However, I noticed that the thickness on the left and right sides of the spool holder varies—some models have reinforcement on one side, while others do not. To address this, I added an adapter to match a 4.5 mm thickness (the standard spool holder thickness), though normally a 3.5 mm version is sufficient.

If you’re experiencing similar issues, please leave me a message with the spool holder’s diameter and single-side thickness, and I’ll be happy to modify the file when I have time.