This is a classic iris mechanism. Its movement it beautiful and surprising every time you turn the handle. This model comes as a kit for assembly. It is made of wood and plexiglas In addition to the assembly instructions that come with it, you can see step by step video in our YouTube channel: www.youtube.com/user/yoavkleiner Enjoy
This is a completely rebuilt version of my original iris door box. The walls, leaves and top ring are much thinner on this version, reducing material and print time. The mechanism is also easier to assemble and adjust. They are designed to work with a specific screw diameter so sizing them up or down may not work.