Knobs for Bed leveling CraftBot

thingiverse

The standard knobs on a CraftBot's bed often become loose, which can be solved by installing replacement versions based on M4 lock nuts. To do this, simply push the lock nut into place inside the knob itself. Although twisting or mounting these new knobs may prove challenging due to the lock nut's inherent resistance, rest assured that they will no longer loosen once installed.