I have High Heels for 2020 Aluminum Extrusion under my Kossel XL. First I used felt pads underneath them for sound isolation, but that was not a big success. I designed a small holder for 14 x 5.5 mm round rubber feet and a 10 x 1.8 mm round magnet. The magnet is attracted by the metal screw that is used the mount the aluminium feet. This way the rubber feet are easily mounted and removed. Use support material to print the parts. Use a drop of glue to attach the magnet, the rubber feet are self adhesive.
You need to print three, and add
- 3x self adhesive round rubber feet 14 x 5.5 mm
- 3x round rare earth magnet 10 x 1.8 mm
You can modify the design to you needs using Autodesk Fusion 360.