functional ratchet set (not only for children)
Pay attention to accuracy when printing. Be careful. All circular holes must have very little clearance so that the components can move freely without much friction.
The stiffness of the spring determines how well the switch will work.
You can use a spring from a pen for example.
You need to try everything before you glue the ratchet.
I chose gluing for safety reasons. Small children could inhale small components (pin/spring).
The pin worked for me from Pet material. It slides better and the switch works better. But it also works completely from PLA.
The handle is only pushed on.
For complete assembly instructions of gola, see video:

https://youtu.be/AYBZHeZBIkw

for torque multiplier see video:

https://youtu.be/wX-3uxdOkcM