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Re:Make with Ada: ARM Cortex-M CNC controller by jcoffland on Wednesday June 01, 2016 @12:07PM (#11815558)
Author should check out http://camotics.org/ It's an Opens-Source 3-axis CNC simulator that runs on Mac, Windows and Linux. It not only shows you a visualization of the tool paths but also the resulting cut workpiece.

Disclaimer, I'm the author of CAMotics.

Re:Make with Ada: ARM Cortex-M CNC controller by Fabien_C on Wednesday June 01, 2016 @01:11PM (#11816159)
Author is aware that there are many Gcode simulators.The specificity of this one, thanks to Ada portability, is that the simulator code is 100% the same as the code running in the embedded controller.
Re:Make with Ada: ARM Cortex-M CNC controller by jcoffland on Wednesday June 01, 2016 @02:35PM (#11816974)
No other Open-Source GCode "simulators", as far as I know, simulate the actual cut.
Re:Make with Ada: ARM Cortex-M CNC controller by michaelbuddy on Wednesday June 01, 2016 @05:46PM (#11818485)
You just made me realize I never looked up the word 'Disclaimer' before. Now that I have, I realize that I've been using it wrong.