motiheal -
PS - I have a tendency to over-engineer to reduce the possibility of failure. A compromise to my idea would be to use plastic pop-rivets in the forward hole or holes and magnets for the rest of the connections. That would make the forward part strong and reduce the number of pop-rivets you would have to pop out (maybe 1 or 2 per wheel. I am going to use 5 per wheel in my v2.0). When I say pop-rivet, I mean those plastic fasteners that are used on cars to attach plastic parts to cars.
CarloSW2
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