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you know those billboards that rotate between two ads? how would I make one, but smaller, and so it works manually? Answered

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Default117

9 years ago

You can use several triangular prisms with a crank

Billboard.jpg
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Oryctolagus habilis

9 years ago

Hmmm... off the top of my head, it would probably involve window shutters; the functional kind designed for indoors.