The links and artifacts at the end of this post notwithstanding, per my previous post in this thread of July 2022, I still use LB CAD and Sheetcam CAM for my CNC plasma table process day in and day out. That process is easy, fast, flawless, repeatable, adaptable, and above all, low mental stress. Steel is not cheap.
That process and the post processor is available and described here (and throughout the thread):
What follows are artifacts for an alternative 100% LB solution of CAD/CAM for the CNC grbl plasma table process. I only use this process for testing and sharing purposes as LB continues to develop Custom GCode device for non-laser CNC processes.
Custom GCode for plasma v1.7 bLouChip.lbdev (6.0 KB)
p- sq cir example LB xmpl.lbrn2 (9.5 KB)
p- sq cir example LB xmpl.gc (8.6 KB)
LinuxCNC “G-Code” Quick Reference