https://www.instructables.com/Ratchet-Knob-Unidirectional-Mechanism/
Ratchet Knob (Unidirectional Mechanism) : 12 Steps (with Pictures) - Instructables
Ratchet Knob (Unidirectional Mechanism): A ratchet is a mechanical device that allows motion in one direction but not the other. An example of this is the...
ratchet knob12 stepsunidirectionalmechanismpictures
https://www.instructables.com/Print-in-place-Ratchet-Knob-With-14-Hex-Socket/
Print-in-place Palm Ratchet Screwdriver Knob : 3 Steps (with Pictures) - Instructables
Print-in-place Palm Ratchet Screwdriver Knob: 3D printed palm ratchet knob (stubby screw driver handle) Print-in-place : Just print, and you are all set....
in placepalm ratchet