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Open-Source CoreXY 3D Printer

I wanted to build my own Voron, so I made my own design.
This is my take on a CoreXY printer that follows the same mechanical principles as the Voron.

Documentation 3D Files


MY-CoreXY 3D Printer

The MY-CoreXY-3D-Printer is an open-source CoreXY 3D printer, designed for high-speed and high-precision printing. Inspired by the Voron series, this project is ideal for makers, engineers, and DIY enthusiasts looking for a reliable and customizable 3D printer.

Key Features

Provide a general summary of the services you provide, highlighting key features
and benefits for potential clients.

  • CoreXY Motion System – Efficient and precise movements for high-quality prints.
  • EVA Extruder Support – Modular extruder system for easy upgrades and customization.
  • Rigid Aluminum Frame – Built with 30×30 mm aluminum extrusions for enhanced stability.
  • Adjustable Print Size – Available in 400x400x400 mm, with 300x300x300 mm and 250x250x250 mm options.
  • Advanced Firmware Support – Optimized for Klipper with a Raspberry Pi.
  • Future Multi-Color Support – Planned Turtle Box system for multi-color printing.

Check out the EVA extruder project and show your support:

EVA-3D Official Page

Technical Specifications

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Frame & Structure

  • Print Volume: 400x400x400 mm (Optional: 300x300x300 mm, 250x250x250 mm).
  • Frame Material: 30×30 mm aluminum extrusions.
  • Print Bed: Fixed bed with gantry leveling and mechanical bed leveling.

Motion System

  • CoreXY Drive System: Efficient belt-driven system with motors mounted on the upper frame.
  • Linear Guides: MGN12 linear rails on all axes for smooth and accurate movement.
  • Belt System: Robust tension-adjustable belts for perfect alignment.

Extruder & Hotend 

  • Extruder Type: Direct Drive EVA extruder.
  • Hotend Compatibility: Supports multiple hotend configurations.
  • Future Upgrade: Planned Turtle Box system for multi-color printing.


Electronics & Control 

  • Mainboard: Makerbase MKS Monster 8.
  • Firmware: Optimized for Klipper, also compatible with Marlin.
  • Connectivity: USB, SD Card, and Wi-Fi (via Raspberry Pi).


Power & Heating

  • Power Supply: 24V system, with a 240V heated bed.
  • Input Shaping Sensor: Implemented for resonance compensation.


Speed & Precision

  • Acceleration (XY): 2500 mm/s²
  • Max Print Speed: Up to 350 mm/s
  • Jerk (Corner Speed): 5 mm/s


Controller Board

The Makerbase MKS Monster 8 is a powerful 32-bit mainboard designed for high-speed 3D printing. With support for Klipper and Marlin firmware, it delivers advanced performance, smoother motion, and preci​se control. This board is ideal for CoreXY setups, making it a perfect match for the MY-CoreXY-3D-Printer.

Key Features of the MKS DLC32:

  • 32-bit High-Speed Processing – Ensures smoother motion and faster command execution.
  • Supports Klipper & Marlin – Optimized for Klipper firmware, also compatible with Marlin 2.0
  • 8 Stepper Driver Slots – Allows independent motor control for multi-axis configurations.
  • TMC Driver Support – Compatible with TMC2209, TMC5160, and other UART/SPI drivers.
  • Integrated Wi-Fi & USB Support – Remote monitoring and easy file transfer.
  • Expandable Ports – Multiple PWM fans, temperature sensors, and endstop connections.

More information: Makerbase Official Page

Affiliate Link: Buy MKS Monster 8 on AliExpress

How to Build Your Own MY-Core XY

If you want to build your own 3d printer, you’ll find everything you need right here!

  • Step 1: Download the 3D Models & Documentatio GitHub Repository
  • Step 2: Gather the Necessary Parts.Use the BOM above to order all required components.
  • Step 3: Print the 3D PartsIf you don’t own a 3D printer, consider using an online printing service.
  • Step 4: Assemble the Frame & Motion SystemFollow the provided assembly guide to build the mechanical structure.
  • Step 5: Install Electronics & FirmwareSet up the MKS Monster 8, wire all motors, sensors, and configure Klipper.
  • Step 6: Test & CalibrateTune belt tension, extruder settings, and Input Shaping for optimal results.


Development Roadmap

Ongoing improvements to MY-CoreXY 3D Printer:

  • Improve 3D drawing STEP files
  • Change z axis pulley assembly
  • Adjust board location for better access to power supply plug
  • Adjust X-Axis height to engrave thicker materials
  • Add emergency stop button


Legal Notice & License

This project is licensed under Creative Commons – Attribution – NonCommercial – ShareAlike (CC BY-NC-SA).
Project: MY-CoreXY 3D Printer | Author: Edgar Mata

License Summary ​ ​See Leagal Text