To do this, all that is needed is a Polaroid Land camera, some small screwdrivers, and a small sheet of thin metal. These cameras can be found on eBay, or better yet, at yard sales. It will be made into a pinhole camera with several pinholes that can be switched into place, for use in various light conditions etc.
With a thin blade, pry off the cover plate on the front of the camera. Remove
the plastic ring around the lens, and discard it. Unscrew the lens, and set it
aside (this will be made into the lens cap). Cover the small semicircular slot next to the lens with a piece of electrical tape, to prevent light leaks.
Open the back of the camera, and remove the 4 small screws around the lens
that attach the bellows to the front of the camera. Then, remove the screw on
the front of the camera that attaches the lens assembly to the frame. Then it
can be swung out to allow access to the back; Remove all the screws on the back of the lens assembly, then pry off the thin metal plate on the top of the lens assembly.
Cut the cable between the the camera and the circuit board, and remove it from the lens assembly. Pop out the lens in the back of the lens assembly. Remove the screws holding the circuitboard to the front of the lens assembly.Remove excess parts from the front and back of the circuitboard (refer to photos
to see what is needed).
Take off the small metal arm holding in the plastic dial: remove the screw, then carefully pry off the tiny metal spring clip. Do not bend this out of shape, as it will be needed when reassembling. (If it gets bent, or lost, there are several other of the same clips in the unused parts of the circuitboard that were removed). Remove the spring resting against the center of the dial and save. Take out the plastic dial with the holes in it.