The diamond operator <> lets the while loop iterate over the input file (our G-code) line-by-line. In this example, we just print back the unchanged content of the G-code line.

The G code for the printer was generated by FlatCAM, a piece of software made specifically for cutting PCBs with a mill.

I made some mistakes learning how to use the $300 Elegoo Centauri Carbon 3D printer, but it didn't take me long to make my first part.