Nema 17 axle support
thingiverse
I had a problem with bed leveling: every other print, z position was shifted. Eventualy I found problem: heatbed with glass plate was too heavy and it cause too big axial force on Nema 17 stepper. Because of that, axle on stepper moved inside stepper and cousing random z layer problems. When I installed that support, problem with z axis was gone. Dial gauge confirmed that. Support is designed for TwoTrees Sapphire Plus, but is should work in any printer with vertical Nema17 stepper connected with leadscrew. Also, you need F625ZZ flange bearing and spacers to fill room from bearing to coupler.
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