Quote Originally Posted by EddyCurrent View Post
multi axis CAM - it's open source
I looked at a video...

He drew a back and forth XY tool path in 2D
He projected it down on to the surface of a sphere to get 2.5D
He turned the tool so it stayed perpendicular to the sphere surface to get 4.5D
He ran it in software emulation, well it seemed to do something
He exported part of a G code using cut and paste.

I don't think you have to be a geek to see this is somehow lacking.