Sure, it’s possible to use a CNC router to mill out a PCB, and ditto for a fiber laser. But neither tool is perfect; the router creates a lot of dust and the fiberglass eats a lot of tools ...
[Stephen Hawes] has been trying fiber lasers to create PCBs ... FR4 uses epoxy which will probably produce some toxic fumes under the laser. We were surprised at how good the boards looked.
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