We had the problem that our vaccum robot get stuck on our bar stools. So I made a reference of the base from the stools and designed this stopper.
I added the Fusion 360 archives in case you want to change some values.
0.6mm Nozzle, 0.4mm layer high
OWL Prototype PLA
Turn 90° over x-axis
Use Brim 10mm for a saver print
Print the part 8 times for 360° protection
Add 10mm x 2mm neodym Magnets
Clean the holes for the Magnets, if needed