With circular motion, you can spin threads, mill grain, move a wheel forward, drill holes, bring water upwards, generate electricity spinning turbines, create gravity, defeat gravity. It's just too OP

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Not OP, and I'm not sure how the lathe itself does it. But it shouldn't be surprising that it's possible to create more precise tools from less precise tools. Otherwise it would be impossible for us to ever create tools more precise than our own hands and fingers.

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