How could I make a mechanical 1/45th sec shutter for a box camera? or how could I make a modern kodak box camera?

I was looking at the original kodak camera and was wondering if anyone had tried to make a modern version. It seems simple, but the shutter mechanism is a little unclear to me

frollard8 years ago
a piece of cardboard with a slit cut in it, attached with a rubber band could be the shutter. Calculating the speed needed would depend on the size of the slit.