Cross-Cable Anti-sag for Ender 3 Pro/Neo/Max (BETA!)
Description
Disclaimer! This is a work in progress. BETA. Untested. This is a pully+cable based anti-sag. Inspiration for this came from a combination of kevinakasam's belted Z-Axis project improving print quality with better control over the Z-axis travel, torsion bars (sway bar) and anti-sag kits for large cabinetry projects. This project requires: 8x U groove bearing - 4x13x4mm (Commonly used as filament idle bearing) 12x M5 T-Slot Nut 12x M5x8 Bolts 4x M4 Hexagonal Nut 2x M4x25 6x M4x12 **Some form of cable/line to put tension on the system Additional print parts may follow. Theory of operation: -Tensioning the 'red' parts will cause the X-Axis gantry to be pulled in the CW direction. -Tensioning the 'blue' parts will cause the X-Axis gantry to be pulled in the CCW direction. *By keeping both halves in tension with a line/cable with little/no stretch, the left and right sections of the X-Axis extrusion will influence each other allowing for a much more stable (and level) travel in the Z-Axis. Notes: -This project is not compatible with Ender 3 Models that use a Z-Limit switch. I have probes on my systems, so this is a non-issue for me. Remixes are welcome to incorporate a Z-Switch holder on the Bottom Left part, or some other creative way to use both parts. -This is theoretically compatible with an Ender Max, as the added width of the machine means longer wire, however the angle of the red-pulleys change by 0.8°. This is has an unknown impact. -Fastening the cable/line to the axis is theoretically accomplished simply by tying the line onto the spacer between the wheel and plate. -Tensioning the system is theoretically accomplished by repositioning the 'bottom' parts to achieve course tension control, and to a limited degree adjusting the inside-most top parts for finer control. -The cable/line for the left-red portion of the system if fastened to the rear-spacer.
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