Came across this because it's been used for FreeCAD: https://forum.freecadweb.org/viewtopic.php?t=51429 https://forum.freecadweb.org/viewtopic.php?t=51429 but

Came across this because it's been used for FreeCAD: https://forum.freecadweb.org/viewtopic.php?t=51429 https://forum.freecadweb.org/viewtopic.php?t=51429 but couldn't manage to wrap my mind around FreeCAD so as to benefit from it.