Double-sided routing with tool change!

This is the first test of tool changing and double sided routing on my custom, 3D printed CNC machine, the goal was to drill alignment holes, mill the top surface part way through, flip on the alignment holes and mill the bottom surface and end up with the bottom holes aligning with the top holes.

The GCode was generated with ESTLcam (https://estlcam.de/)
and sent with bCNC (https://github.com/vlachoudis/bCNC) which also handled the tool changing.