Spring-loaded, self-locking joint mechanism

This is a button operated, self-locking joint. It uses a plunger with a spur gear at the end to lock the rotating part of the joint into specific position and the spring tension keeps it in place.

The Post Printing section includes information on how to assemble it. The gallery includes a cross-section of the design with parts labeled which might help referencing the "how to" steps.

It is not fully 3d-printable, there are auxiliary parts required. List of parts used:
- M3x5 threaded inserts (x10)
- M3x12 screw (x8)
- M3x8 screw (x2)
- A flat-sided key ring 30mm in diameter, stretched both directions to form a spring (details in the Post Printing section)