Anycubic I3 Z-Carriage upgrade

cults3d

My Z Carriages started cracking on my Anycubic I3 so I decided to upgrade them with new bearings that are clamped in with set screws, which seem to be working great. I moved the motor to the front of the carriage to put the center of the motor weight closer to the Z lead screws to stop twisting and damage to my printer. An integrated X Endstop is built into the left carriage for precision and accuracy. Since I'm using a probe and a Z-Max endstop, I chose not to include anything for a Z-Min endstop. The right carriage requires springs for the belt tensioner; specifically, 9.6mm OD and 27mm length relaxed springs are needed for optimal performance. A 16 tooth Idler pulley with a 3mm bore is required for the belt tensioner, which also means changing the belt drive pulley to 16 tooth to maintain proper alignment. I designed the carriages to use spring loaded anti-backlash nuts, which work exceptionally well and provide smooth motion. If you have any questions or try printing these carriages, please let me know in the comments for feedback.