smaller rotor, tiny Boston terrier shown for scale. this is from upright wood pieces from a smashed chair i found in the dumpster
First attempt at rotor, using 1 cubit tensegrity stick tetrahedron. holes are drilled in axle stick for tight coupling. Without duct tape this is too loose, and needs some other thing besides nylon cord to keep it from moving.
pill bottles and stick ends look to be a real winner for a bearing. Must always remove all the info on the label, though, or this can cause problems with leaked personal medical data
Added paddles and suspended from a stick with nylon cord bearings, spins ok, not rigid or uniform enough, and the bearings are too movable.
Tetrahedron rotor stick demo - YouTube