Mechanical iris box

This is a 4 section box to store stuff and it has a mechanical iris for it's lid. It's no better than a normal box, but its cool and fun to use. To assemble, take the leaves and put the rods through the hole into both disks (first the one with the diagonal cuts and the extruded centre, then the one with the straight slots pointing to the centre). Glue them if required. Then put on the stoppers and finally you can glue the main box onto the iris assembly.