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 ...

It’s funny because it’s true, as pretty much any laser a hobbyist can easily come by can cause permanent damage to eyes unless the proper precautions are taken. But a fiber laser with 200kW ...

More information: Lei Huang et al, High-efficiency 6-hole structure anti-resonant hollow-core fiber 2.79 μm Cr,Er:YSGG high-energy pulse laser transmission system, Optics & Laser Technology (2024).