Description
It is a mechanism similar to iris mechanism. There are two leaves. It looks similar to Chinese Taiji or Tai Chi. When you rotate the "Drive Part"or the middle plate, the blades inside center hole can open or close gradually.
The center hole's diameter is 50mm, outer size is diameter 120mm and thickness is 12 mm. Most parts are designed for laser cut. The parts' thickness is 3 mm. Most parts can be 3D printed too, it you plan to do that, resin material should be the best option,but the 3D printable version may be better.
To assemble the parts togther,some metal parts and glue are needed: Diameter 1mm length 5mm-pin; Diameter 1mm,length 12 mm pin;
M2X12 screw; M2 hexagon nut. Refer to the BOM in the attachment.
Due to the part's quality, maybe you need to do some handwork.
STEP and DXF (vector format) format files are included.
video: https://youtu.be/CA6mhUxanh0