MPSM v1 NEMA 17 Z Bearing Plate and Stabilizers

thingiverse

When I upgraded the Z stepper motor to a NEMA 17 with integrated lead screw, I decided to relocate the extruder stepper outside the tower and install a stabilizer bearing at the top. In designing the carrier for the bearing, I made the decision to use the existing mounts for the z-axis rods as anchors, eliminating the need for separate stabilizers that are now part of the plate itself. https://www.thingiverse.com/thing:1775502 Overall, the entire assembly feels much sturdier. You may need to use a drill bit to clear any imperfections out of the holes since I've encountered some variation in sizes due to filament types, print nozzle/resolution, etc. The extruder stepper relocation to the top should be facilitated by placing M3 hex nuts in three of the four holes aligned with the existing extruder mount hole. This allows for attachment of a 90-degree bracket on top using three of the existing holes. The bearing used for the upper stabilizer is a 608ZZ.