Gift Box 04 for 3d printing-D90-bevel gear and rack
There are several gears and racks. When you rotate the side gear with a “key” and handle, the four blades opens or close gradually. The center hole is diameter 90mm. The whole unit can be mounted on other parts with the 4-M3 bolts.
Parts are designed for 3d printing.
Long video: https://youtu.be/4t9SWPhPCkM
