This is an Aperture Iris Box which features an easy opening twist collar and a decorative lid. The box is 80mm tall, 80mm in diameter and is opened by twisting the collar anticlockwise. I have also produced a valentines lid for this box.

I have many other iris boxes which you can find on my profile page and I have produced a general Instructable guide on how to print my iris boxes to a high quality.

Other than the printed parts, this requires M2x6 countersunk/flathead screws to assemble (as with all my other designs) such as these; 24 screws are required in total. Larger or smaller screws may be used if you scale the model appropriately e.g. M3x8 screws at 150% part scale.

There are two types of door. The simple 'door' is completely flat and the decorative door 'door-dec' creates a compass like embellishment on top of the container (as seen on the cover image).

There are two versions of the container, the standard container and the shortened container which brings the overall height down to 48mm.

Part testing

If you can print one of my other 'aperture' designs then you will be able to make this design.

Before printing off all the parts you should make sure the screw joints and sliding dovetail joints work correctly with your print settings.

Print two of the 'Door' parts using some support on the dovetails and test the dovetail sliding. Be careful when adding supports to the dovetails, to only support the outer part (see pictures). The inner part can be bridged easily, and adding unecessary supports here make them hard to remove.

They should be loose enough to slide easily for the design to work effectively. Try to avoid 'elephants foot' on the base of the doors, as this can reduce tolerances and cause excess friction. If they are too tight then try reducing the layer height or using outer contour XY compensation in your slicer (Ideamaker is a free slicer which does this). Lower friction materials are also ideal, I used PLA which works great.

Check that the screws fit tightly in the holes on the base of the doors and they turn freely in the links and that the head is flush with the part surface. You may need to scale the parts or use hole XY compensation (Ideamaker also does this) to get a good fit.

Multicolour printing

To make the box you will need to print: 1x 'Container' or 'Short Container', 1x 'Collar', 8x 'Link 1', 4x 'Link 2' and 8x 'Door' or 'Door dec'.

The multicolour lids were achieved by doing a material swap at the appropriate height.

The pattern on the green container was formed using the velocity painting technique (more info in my Instructable). The floral patterns were Designed by GarryKillian / Freepik.

Assembly Instructions

Also see pictures for visual instructions

Take the container and place the collar onto it.

Screw the narrower ends of the four small links (Link 2) to the holes in the container. Be sure you have them the correct way around, the difference is slight but important. The collar should now be held securely onto the box but also be able to twist freely.

Screw the non-pointed ends of the larger links (Link 1) to the collar.

For attaching the links to the doors it's easiest if you roughly assemble the doors in the open position upside down and place the container and collar assembly on top of them. Now screw the other end of the small links to the inside holes on the doors.

Now screw the larger links to the holes on the outside edge of the box doors.

You should now have a working Aperture Iris box! The mechanism may be a little stiff at first but should loosen up over time. A little big of silicon lubricant could also be used on the dovetail joints to make it work more smoothly.

If you have any questions or problems with this design, I will be more than happy to help.