A 12 leaf version of my aperture box design, producing a sliding 12 sided aperture much like a camera iris. It is opened by twisting the handles on the doors in a clockwise direction.

I also have many more Iris box designs which you can find on my Thingiverse and MyMiniFactory profile pages including an improved version of this design '12 Leaf Aperture Iris Box'. I have also produced a general Instructable guide on how to print my iris boxes to a high quality.

The part files are designed for M2x6 countersunk/flathead screws such as these (as with all my other designs); 24 screws are required in total for the box. The parts can be scaled to use larger or smaller screws e.g. M3x8 screws at 150% scale.

The box is approximately 80mm wide, 80mm tall (using the standard container) and has a 64mm container opening. Two versions of the container are included: the standard container which makes the box 80mm tall and a shortened container which makes it about 40mm tall (used for the printed example).