D40M5BTY2 mechanical mechanism for 3d printing shutter iris diy 3D print model

When you drive the small gear, the center hole can open or close gradually. The center hole is diameter 40mm. To assemble the parts togther,some M2 screws are needed. Parts are designed for 3d printing. It is best to use resin material when 3d printing. And you may need to sand some parts due to the 3d printing quality. You can drive the mechanism with hand, Or you can assemble a motor to make it work too. STL and STEP format files are included.Ignore the FBX and OBJ format files, they are only for cgtrader's requirement.