Perpetual motion is not real but with magnets, it is possible to create an illusion of it. We have already covered a few battery powered marble runs in the past that use electromagnetics to keep tiny balls rolling through them. This 3D Printed Automatic Marble Run takes a bit of a different approach. It requires an adapter and can handle multiple balls whereas other battery powered version struggle with more than a couple of balls in them at the same time.
More gadgets like this: here
3d Printed Perpetual Marble Run ⭐ @Gadgetify
This marble machine has 3D printed parts. It has a convenient switch on the side that you can use to turn the device on/off. This is rare but you can find it on sites on eBay.
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