Universal Joint Z coupler

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The Prusa I2 Printer Experiment: Reducing Z Wobble with Precision Engineering. To minimize wobbling issues, the design features holes that perfectly align with the print bed. The wing's holes are carefully sized to accommodate an M3 screw with minimal friction, ensuring smooth operation without excessive play. Conversely, the centerpiece holes are engineered to be extremely tight, allowing users to create threads by driving in the M3 screw. The motor shaft boasts a single nut trap for the flat surface, while the threaded rod features three nut traps to facilitate alignment adjustments. To assemble each Universal Joint, you'll need 8x M3 x 10 or M3 x 15 screws and 4x M3 nuts.