Ergo Knobby Ratcheting Screwdriver and Socket Wrench with Insert
thingiverse
This is not a derivative of the popular ratchet knob - he doesn't allow derivatives. This design was built from scratch and also includes a hex adapter for screwdriver bits. All parts can be printed without supports, but the insert should be aligned with the long flat side on the build plate (90° rotation). I found that other similar designs had issues with torque. This one avoids breakage by using the natural motion of turning a screwdriver to ratchet while applying full force.
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