HUGE Fidget Spiner

thingiverse

I was at a hamfest recently and stumbled upon some enormous 214KDD bearings in a junkbox. What else could you possibly do with giant bearings like those? Holes are built into the design for #6 screws and nuts, which prevent the wings from sliding off of the core during operation. Don't even think about spinning them too fast - someone or something will definitely get hurt!