My question concernes adding vias to pcb. Will they, at the production stage, actually drill holes for vias and add connection betweeen top/buttom layer?
Hi, they first drill all the holes(vias, regular holes, pads etc), the after that in another step add the additional copper for vias, through holes and others.
Here you can see a video made by Scotty from Strange parts where he visits the JLC PCB factory and you can see each step of PCB manufacturing.
[https://www.youtube.com/watch?v=ljOoGyCso8s](https://www.youtube.com/watch?v=ljOoGyCso8s)
Hope this helps you find the answer!
@deskpro256 Thanks for your quick response. Maybe a follow up question? I have two layers pcb with both layers added copper area as GND. How do I connect those two layers together given same potential GND. I have tried via between two layers GND area but it's seems not to work.
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