Ender Y Axis Frame Support - Ender 3/pro, V2/Neo

Ender 3/pro, V2/Neo Y-Axis Reinforcement Using MGN12 Rail

This Design is designed to reinforce the Y-axis extrusion of the Ender 3 pro, V2/neo by securely integrating it with the rest of the printer's frame. The design utilizes an MGN12 rail (330mm long), which offers exceptional rigidity and stability. This project is perfect for anyone looking to strengthen their printer for high-speed, high accelerations, and reducing ringing

Backstory

The idea for this project came about because I had a leftover MGN12 rail without a carriage, and its rigidity made it a perfect candidate for improving the structural integrity of the Y-axis. I created this design to make the most of this rail and to give others a simple way to enhance their printer's performance.

Hardware Requirements

MGN12 rail (330mm)

Right and Left Frame Mounts:

4x M5 12mm button head screws

4x M3 14mm socket cap screws

4x M3 nuts/locking nuts

Middle Frame Mount:

3x M3 20-25mm socket cap screws

2x M4 14mm socket cap screws

2x M4 T-nuts (Hammer Head is recommended)

3x M3 nuts/locking nuts

Print Settings

Perimeters: 5

Layer Height: 0.2mm

Infill: Minimum 40%

Top/Bottom Layers: 6/5

Recommended Filament: PLA(+) works great for rigidity, but any filament should perform well.

Important Assembly Note

Assemble everything on the MGN12 rail first, and then mount the entire assembly onto the printer. This will make the installation process easier and ensure proper alignment.

The M4 T-nuts are used on the Middle Frame Mount to attach it to the Y-axis extrusion. Make sure to install these T-nuts before securing the whole rail assembly to the printer's frame.

Before installing the MGN12 rail on the Left and Right Frame Mounts, ensure you insert the M5 bolts into the Left and Right Frame Mount. Due to the design, the M5 bolts must be in place before securing the rail to avoid assembly issues.

Credits

This project was inspired by a .f3d file from @LH_511298, specifically the "Ender Cross Support Feet" design. Credit goes to them for providing a reference model, which guided the creation of this upgrade. Additionally, this design is fully compatible with LH's Ender Cross Support Feet, offering seamless integration for enhanced printer stability.

Additional Notes

If you encounter any issues with the models, please let me know in the comments or by sending me a message. Feedback is always appreciated, and I’m happy to help troubleshoot or improve the design. 

Changelog

• Added: “Middle Frame Mount Ender 3 Version” file for the 2040 extrusion of the Ender 3 version (Not Tested)
• Updated: Y Axis Frame Reinforcement.f3d file and related models with minor touch-ups
• Updated: Model descriptions for clarity, Changed Right and Left Frame Mounts hardware spec from 4x M3 12mm socket cap screws to 4x M3 14mm socket cap screws

Enjoy reinforcing your printer and unlocking its full potential!