Gear Box 01 For 3D Printing

It is a special box or a functional unit. When you drive the handle(or the bolt), the blades open or close gradually. It is not lightproof，and it is not a gear reduccer .
You can design the bottom box by yourself and then assemble it other parts by bolts.It can be considered a gift box design plan.
To assemble the box, you need to prepare some metal parts: M3X12 screw, M3 nut, M3X10 screw, M3x16 screw.

https://www.cgtrader.com/3d-print-models/hobby-diy/robotics/special-gear-box-01-for-3d-printing