Printrbot Z Axis 5mm threaded rod upgrade
thingiverse
For an improved Printrbot Plus V2, replace the 5/16 threaded rod and eliminate Z-ribbing artifacts by using a 5mm rod ($15 from McMasterCarr). This change allows even layer heights and resolves stepper motor issues. Additionally, install dual nuts with springs for backlash exclusion. Couple the rod to motor shafts with tubing and zip ties for an even coupler. Adjust firmware settings to 4000 steps on Z-axis, and consider brass nuts for the best setup. This upgrade is a game-changer at just $15.
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