Iris Gift Box

This box features an iris mechanism with very little resistance as to turn the lid easily with two fingers. It‘s achieved by a sort of ball bearing using 6mm steel balls and a pattern of leaves that don’t overlap.
What makes it a gift box? Well, you can store little gifts inside or use it as a gift 
I uploaded a short video here: https://www.youtube.com/watch?v=FOQdQyLQQjw
The lid has to tob e mounted following a specific path to prevent the lid from detaching when grabbing it.
Outer diameter: about 13 cm, height: < 5 cm.

Credits:
This design is basically the following one by Acop Minasean turned printable and with a box wrapped around it: https://grabcad.com/library/mechanism-of-shutter-1

You have to get yourself 12 6mm steel balls. They are quite cheap as it is a common ammunition for slingshots. Random example: https://www.amazon.de/Sector-71-Hochwertige-Stahlkugeln-Kugellager/dp/B01HGV0EZQ/ref=sr_1_6?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=KEAL8YZ3SZJ8&dchild=1&