Flsun Z Stabilizer

This "thing" is designed to support the Z axis coupling on Flsun I3 2017 with Nema 17 mounted on top of frame.
The standard couplings are too springy and many "spider" type coupler pull apart.
The stabilizer uses a 608ZZ bearing to support the weight of the Z axis.
The bearing is not fully constrained in the axial plane, so should not cause Z wobble issues.

Note that I do not have replaced the original acrylic Z motor mounts with aluminium.
There may be enough flex in the acrylic mounts