How do I build a simple hand-cranked film projector?

DIY 3D Hand Crank Film Projector Wooden Building Assembly Kit Toy

How did old movie projectors work? - Quora

How do I build a simple hand-cranked film projector?

DIY 3D Hand Crank Film Projector Wooden Building Assembly Kit Toy

Film projector illustration hi-res stock photography and images

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Film projector illustration hi-res stock photography and images