Helical Gears Pendant 7mm

Exercising with gears and threads, I modeled this assembly to reduce the assembly as much as possible, developing 2 gears with a thickness of 12mm initially and then reducing them to 7mm, with viable movement and refining the design of the gear in both versions, mounted on a chassis that is assembled . With 2 screws that complete the construction of the system, it is a simple example of gears mounted on a pendant, either for a keychain or example of this type of gears.