There are various projects for 3D-printing these… looks like a pretty feasible undertaking until you realize you need dozens to make a proper sign. https://www

There are various projects for 3D-printing these… looks like a pretty feasible undertaking until you realize you need dozens to make a proper sign. https://www.instructables.com/id/Split-Flap-Display/ https://www.instructables.com/id/Split-Flap-Display/