Geeetech A10M / A20M extruder dampeners (TPU)

**I improved this part here: https://www.thingiverse.com/thing:3367569 **
**Recommended to print the improved part instead!**

This dampener reduces the noise emitted by the extruders by 3-6dB:
https://youtu.be/AWhgYuN5S6s

Installation: You'll need M3 screws (8-10mm) and M3 T-nuts for fastening to the aluminium extrusion. I sourced them from the filament spool holders as I have my filament mounted on the wall instead.

The protrusion from the oval part can be pressed in the aluminium ex