robertferanec , 08-03-2020, 08:01 AM
I didn't want to use uVIA from L1 to L3, because that would require a bigger hole in uVIA (google for VIA ratio). And I didn't want to stack uVIAs on top of each other, that makes PCB more expensive. So I had to use uVIA from L1 to L2, make a short track and place a uVIA from L2 to L3. That is the reason why L2 can not be an Altium Plane layer, but we had to create it as an Altium Signal layer - because we need to draw short tracks on that layer (it would not be easy to draw tracks on Altium Plane layer).
Does this answer your questions?