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Comment on A home made PCB stepper motor

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Man magnetic fields are so fun to experiment with. These, or magnetic locks, so "magical"

If you have a bunch of magnets lying around have a look at Halbach arrays.

Wow; I knew something like this was possible since we've all held refrigerator magnets and such that obviously had oddly arranged fields, but I only had the vaguest idea. Thank you.

Halbach arrays and some correction coils can be used to make a passive magnetic bearing (long sought after holy grail). They are super interesting.

I've seen that a few years ago, for denser motors. Do they have any other use ?

Thanks for the suggestion nonetheless

Levitation through forward motion, passive magnetic bearings, what's not to like?

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