I bought a Vevor mini-CNC last year . Had a few boo-boos, but Vevor made it right at no cost to me.

https://www.vevor.ca/wood-engraving-...p_010386974707


I never thought I could make a PCB with 0.5mm traces using el-cheapo bits on a $200CAD machine.



(this is the bottom side, double-sided circuit is flipped vertically)




I made 2 mistakes; error in the footprint for a slide potentiometer, and forgot a command for 2 oval holes when I editted the files from FlatCAM (I have to separate the drill and mill sizes - I don't have an automated tool changer).

But still, I'm impressed that we can now make at home such a delicate trace.