CNC machining from first principles — coordinate systems, G-code, CAD/CAM with FreeCAD, and open-source machine control. Real cuts, real numbers, no prior knowledge assumed. https://cnc.bradpenney.io/ Brad Penney en Tue, 01 Sep 2026 01:08:16 -0000 Tue, 01 Sep 2026 01:08:16 -0000 1440 MkDocs RSS plugin - v1.19.0 https://cnc.bradpenney.io/images/exploring_cnc.png https://cnc.bradpenney.io/ A generated G-code file looks like a wall of numbers. Learn the handful of G and M words behind nearly every line, and why 'modal' state changes what comes next. https://cnc.bradpenney.io/reading_gcode_basics/ Thu, 09 Jul 2026 09:30:00 -0300 Exploring CNC https://cnc.bradpenney.io/reading_gcode_basics/ Every move a CNC router makes is just three numbers: X, Y, Z. Learn how machine zero, work zero, and G54 work together — and why getting zero wrong ruins a cut. https://cnc.bradpenney.io/axes_and_coordinate_systems/ Thu, 09 Jul 2026 09:00:00 -0300 Exploring CNC https://cnc.bradpenney.io/axes_and_coordinate_systems/ CNC machining from first principles — coordinate systems, G-code, CAD/CAM with FreeCAD, and open-source machine control. Real cuts, real numbers, no prior knowledge assumed. https://cnc.bradpenney.io/ Wed, 08 Jul 2026 00:00:00 -0300 Exploring CNC https://cnc.bradpenney.io/