CNC-Programming-Note https://www.lincolntech.edu/news/skilled-trades/cnc-machining-and-manufacturing/what-is-a-cnc-machine#:~:text=A%20Computerized%20Numerical%20Control%20(CNC,routing%2C%20engraving%20and%20surface%20finishing. https://en.wikipedia.org/wiki/G-code https://en.wikipedia.org/wiki/G-code