Universal joint / coupler 5/8

thingiverse

This joint design eradicates nonlinearities in motor shafts and threaded rods, resulting in enhanced print quality. The left picture illustrates improved prints after attaching the joints, while the right one demonstrates pre-attachment results. For installation on a 5mm shaft motor, use a 1 M3 nut and bolt; for threaded rods, simply screw it into place. The connecting cross part is still a work in progress, with plans to secure it using small pieces of 3mm filament. An innovative feature is the use of only one M8 nut per XEnd, eliminating Z rod constraints and allowing the threaded rod to wobble, which is advantageous when printer geometry isn't perfect, as is often the case in Prusa designs.