Replacement Z-axis shoulder for Geeetech Prusa i3 clone

thingiverse

The Geeetech I3 has a design flaw that causes extreme Z-axis wobble due to the top end of the Z screw being mounted solidly. This replacement shoulder piece leads the Z-screw, reducing wobble significantly by allowing it to move freely like a flapping leaf in the breeze. My printer came with flexible couplings for attaching the Z motors and screws, which was another poor design decision likely made to cut costs. Replacing these with oldham couplings will further reduce Z wobble. Printer Settings: Printer Brand: FlashForge Printer: Creator Pro Rafts: Yes Supports: No Infill: 15% Notes: Unfortunately, I didn't print this on the same printer it was intended for. There's no reason why it can't be done, but the Z-wobble makes screw and linear bearing holes harder to size. Post-Printing: Minimal tweaking is required if your printer is properly tuned. This part should fit in place of the original part perfectly, except for the linear bearing rod hole. A few minutes of filing are needed to get a perfect and snug fit.