Thin Double sided tape to fasten the PCB clad to a scrap cutting board for the CNC. This should not be the foam backed but rather the thin-film one often used for fabrics. A Finishing brush with ...

Sure, it’s possible to use a CNC router to mill out a PCB, and ditto for a fiber laser ... it only took 90 seconds to cut the traces. He also used the laser to cut a solder paste stencil ...