SL4BLSH80A-Laser Cut Square Hole Sliding Iris Diaphragm

It is not a physical product, what you get are digital STEP and DXF format files. You can manufacture parts and assemble the mechanism yourself. This sliding iris diaphragm is similar to a shutter mechanism. The shape is similar to Chinese ancient copper coins-a square hole inside a circle. The square hole is 80x80 mm, the outer diameter is 270 mm, and the mechanism's thickness is 12 mm. When you move the "Driving Button",the four blades in the center square hole open or close gradually. Most parts can be fabricated on a laser cutter. You need to prepare some metal parts,such as bolt, nut, pins,refer to the BOM in the package. Part's thickness is 3 mm. Free 3DPDF file.
Video: https://youtu.be/t7qIpLAKd_A

This tutorial shows you how to assemble parts together.
https://www.tanerxun.com/assemble-square-hole-type-sliding-iris-diaphragm/.html

3D model Design diy dxf mechanical mechanism STEP vector woodworking