Silencing Printer Feet
thingiverse
Simple and effective: Print with soft Flex and use as feet for your 3D printer so it stands on tips. The size is optimized for Prusa i3 MK2, but can easily be adapted to fit any other printer. These feet isolate the printer from the table it's standing on, preventing structure-borne sound from escaping the printer. I used standard settings for Flex with 20% infill, but any amount of infill should work just fine.
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