Last time I showed you how I turned my 3D printer into a plotter. Step two was adapting to making double sided PCB designs and etching the boards.
For more details on this second step (code details and all) check out my instructables https://www.instructables.com/id/3D-Printer-PCB-Etching
To see how to turn your 3D printer into a plotter in the first place, check out this video and instructables https://www.instructables.com/id/Turn-Your-3D-Printer-Into-a-Plotter/
