40mm Fan Dampener

I designed this in like 2 minutes and thought I save others the time :) if you have a low quality fan or just want to reduce the vibrations you can just use this like a washer. the sides don't let air out so it's better than 4 soft plastic washers IMO. (if you can't print tpu for some reason they're cheaply available anywhere. use them and just put hot glue around the fan

print with TPU obviously. I used 5% infill and it worked fine.

Don't screw too tight otherwise it might be ineffective.