CoreXY 3D Printer - A Development Project

This 3D printer is the result of an engineering project and is still under development. The goal is to create a powerful and adaptable system that offers both high print speeds and innovative features. The concept is based on CoreXY kinematics, combined with a unique Z-axis construction for automatic bed leveling.

Technical Features

CoreXY Kinematics: Two parallel working toothed belts distribute the movements in the XY plane evenly to the stepper motors. This enables higher speeds with less moving mass.

Dynamic Z-Axis: The print bed is mounted on three pivot points and can automatically align itself parallel to the XY plane. This simplifies operation and improves the adhesion of the first layer.

Enclosed Build Chamber: A controlled environment enables printing with various materials.

External Motors: All motors are located outside the build chamber to prevent overheating and increase efficiency.

3030 Frame: The frame is made of 3030 aluminum profiles from Item. They form a robust basic structure.

Print Head: The print head is based on the Bondtech LGX FF extruder and allows the processing of many materials. In addition, a Klicky probe and a nozzle end switch are installed to automatically measure the Z-distance between the nozzle and the print surface.

Electronics and Firmware: The Duet 3 6HC mainboard and a Raspberry Pi 4 are used. Motors and cables are from Igus.

Expandability through Toolchanger: The plan is to integrate up to five different print heads or cutting tools. This allows for multi-color prints or precisely fitting components to be realized.

Status and Outlook

This project is not yet complete, and further optimizations are planned. The mechanics are largely implemented, while software fine-tuning and toolchanger integration are still in progress. The goal is to develop a reliable and versatile platform that goes beyond standard 3D printing.

If you are interested in following the project or contributing your own improvements, I invite you to try it out and give feedback. The CAD files are available for download here on Printables – I look forward to your suggestions!