CoreXY Laser Engraver

Technologies and Libraries: SolidWorks, Machine Design Principles, LaserGRBL, Arduino CNC shield

Project Overview:

This self-directed project aimed to design, build, and explore the commercial potential of a cost-effective CoreXY laser engraver. The goal was to create a versatile machine capable of both laser engraving and milling functionalities.

Inspiration and Research:

Driven by the desire for a tool to assist with sketching and linework during painting, I explored CNC machines. Research revealed the efficiency of CoreXY pulley systems compared to simpler lead screw designs. This sparked the idea of building a more affordable and versatile laser engraver with a modular end-effector.

CoreXY Design and Precision Focus:

• Modular End-Effector: The design incorporates a modular end-effector, allowing for switching between laser engraving and milling functionalities with a single machine.

• Electronic Design and Integration: I researched and selected appropriate electronic components for the project. This included designing and building the necessary circuitry, soldering components, and integrating a purchased 10W laser module with the CNC shield I used. Furthermore, I determined the power requirements for all devices and ensured a reliable power supply system. 

• Precision Belt System: A critical challenge was ensuring near-perfect parallelism between the belts and frames. I transitioned from initial estimations to a rigorous design process. Every dimension in the final CAD model is based on machine design principles, calculations, and real-world part measurements. This meticulous approach minimized potential errors and maximized engraving accuracy.

Results and Learnings:

• Successful Build and Cost Management: The laser engraver was successfully built for $700, demonstrating strong cost-management skills. The 10W laser represented a significant portion of the cost, but it was a strategic decision to optimize production time and engraving output for future business endeavors.

• Entrepreneurial Exploration: This project provided valuable experience in product development, cost management, and the potential of entering the custom laser engraving market.

Skills Demonstrated:

• Research and Analysis: Conducting research and competitor analysis to identify market opportunities and sourcing electronic components.

• Machine Design: Applying machine design principles and calculations to achieve precise mechanical systems.

• Project Management: Successfully planning, executing, and completing a project from conception to realization.

• Cost Management: Optimizing project costs while maintaining quality and functionality.

• Problem-Solving: Overcoming the challenge of belt parallelism to ensure engraving accuracy.