CNCfreesmachine

CNCfreesmachine is an open, community-driven platform for building and operating computer numerical control machines. It emphasizes free hardware and software licenses, enabling individuals and small workshops to reproduce, modify, and share designs.

Design goals include accessibility, modularity, and affordability. The hardware typically uses a rigid frame made from aluminum extrusions or other readily available materials, a Cartesian gantry or a gantry-less design, and drive systems such as belts or lead screws controlled by NEMA stepper motors. A spindle or router provides cutting and milling capability, while limit switches, homing procedures, and protective covers address safety and repeatability. The platform supports a range of working areas and materials, from plastics to soft metals, with considerations for rigidity and vibration management.

Software and firmware are chosen for openness and cross-platform compatibility. Common firmware targets include GRBL or similar open-source control firmware, running on affordable microcontrollers. Host software and CAM workflows typically include LinuxCNC or other open-source tools, with G-code as the standard language. The project encourages documentation for setup, calibration, and maintenance, and it facilitates sharing of toolpaths, stock models, and test artifacts.

Licensing and governance: CNCfreesmachine designs are released under open hardware licenses (such as CERN OHL) and software licenses (GPL/LGPL). A community forum and contribution guidelines support collaboration, version control, and peer review.

Impact and scope: The CNCfreesmachine movement aims to lower barriers to entry for digital fabrication, promote repairability and customization, and spur grassroots manufacturing capabilities in education, makerspaces, and small businesses.