Z Axis Calibration Bar - Monoprice Maker Select
thingiverse
The Monoprice Maker Select has an annoying habit of its Z Axis motors getting out of alignment which creates the illusion of the build platform needing to be calibrated. Apparently this occurs when you turn off the printer and the motors release at different rates (according to the info I've found on Reddit). Using 2 of the calibration bars set on the frame the Z-Axis can be re-leveled quickly by resting the bottom slider rod on top of the bars (see photo).
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