Prusa i3 MK2 / MK2S Z-Axis vibration damper

cults3d

When my Prusa i3 MK2S's original z-height reaches about 30 mm, the threaded z-axis starts to slightly touch the ABS printed "z-axis-top-part". This contact causes an annoying vibrating noise while printing. Many users on Thingiverse and the Prusa forum comment that the threaded Z-axis should move freely, which makes sense to me. To eliminate this frustrating noise, I created a damper that can be printed in flexible filament, effectively eradicating the noise issue. The damper's wall is approximately 0.4 mm thick, leaving sufficient room for the z-axis to 'wobble'. It fits snugly into the hexagon-shaped recesses of the z-top-parts. I printed a set in TPE with a shore hardness of 45D. The left and right dampers are identical, marked as L and R to ensure proper installation. So far, this solution works well for me without affecting print quality. I'll have to see how long they last. The final photo shows the threaded z-axis touching the damper at a z-height of 30 mm. Other photos demonstrate that the z-axis moves freely within the z-top-part with the damper in place. Let me know what you think about this solution.