Failed Test About Combine the Hook and Mechanic Structure

Shelf + Hooks

Transforming the gears into the modules of the furniture, the process of assembling the furniture becomes the process of building the mechanical structure, and the modules can continue to generate motion after the assembly is complete. Make hooks hidden in gears, and by rotating the gears, make hooks appear with the motion of rotation, combining function and playability.

Experiment

. Gear + Bearing + Screws

I try to combine the gear, bearing,and screw to use motion of rotation to promot the linear motion, but it didn't works, cause the components connect too tight.