In this video I construct the clapping mechanism of a clapperboard; a piece of cinematic equipment used to synchronize sound and motion picture.  Using an existing clapperboard as an example, I cut roughly to size birch ply and use iron on melamine edging to create the stylised stripes.  The noise is aided by magnets which pull and keep the two sections firmly together after producing the snapping noise.  Modern boards are used for colour correct and often have digital displays.  Off screen I cut a grove on the underside of clapping mechanism, which a piece of plastic or board could be glued in.