Floating magnetic footer

thingiverse

I built this to keep my 3D printer detached from the table and minimize vibration (it demands at least four - one for each corner), but it's also enjoyable to play around with. The quantity of magnets determines how much weight can be supported by the floating top. There is no stable arrangement of permanent magnets that will float without supports, so this uses a holder and top and then either a rubber band or a weighted object to hold it in place, according to Earnshaw's Theorem (https://en.wikipedia.org/wiki/Earnshaw%27s_theorem). The model utilizes #07046 neodymium magnets (https://www.amazon.com/Master-Magnetics-Super-Magnets-Mfg-07046/dp/B01MCTW9F2). The Inventor file is attached if you want to adjust the holder height or use a different magnet size.