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Custom Designed CNC Machine

From concept to a fully functional CNC machine: CAD design, fabrication, wiring, and G-code programming.

Overview

This project started with a simple goal: build a CNC machine entirely from the ground up and learn every step of the process. I used Fusion 360 to design the complete system—including the frame, motion components, and all mounting features for the motors, electronics, and structural assemblies. After finalizing the design, I fabricated every part myself using my older custom CNC setup.

Once the mechanical build was complete, I wired the servo motors, drivers, power distribution, and control electronics. I also developed a custom post processor in Fusion 360, which required learning many core G-code functions and understanding how they interact with the controller. The final machine achieves excellent accuracy and repeatability, and it serves as a fully functional platform for machining custom parts.

Key Skills & Tools

  • Fusion 360 – CAD modeling and design validation.
  • Mechanical fabrication – cutting, drilling, tapping, and assembly.
  • Electronics – stepper motors, drivers, wiring, and grounding.
  • CNC concepts – work offsets, feeds/speeds, toolpaths, homing/limits.
  • G-code – writing and editing simple programs to run parts.

Photos

A few views of the machine from design to final assembly.