Kicad 9.04 how to define buried and blind via

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1

I would like to pre-defnie the blind and buried via how I can do that. For sure to understand when I traces the routing I would like to drop de via buried or blind and continus the routing

2

With the icon below, you can set the Layer Pair, which is used to determine between which layers you switch when you place a via. (The colors here are from the layers, so yours may be different, and change when you change the layers).

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3

can I have 2 layer pair, exemple inside the area uBGA wicht uVIA the layer pair are 1 an 2 outside layer 1 to 10. and inside the uBGA with Buried VIA, I would like to layer Pair 2 with 8

thanks

4

I just did a little test (In KiCad V8) and apparently there is only one Layer Pair. I had to set a PCB to more then two layers (I have not done multi-layers myself) just to try this out.

Edit: apparently already implemented in V9. See JohnBeard’s remark below)
It would be quite logical that more of these pairs could be defined, but I don’t have much experience here and therefore I won’t make a feature request for this myself. If you want to make a feature request, you first have to search gitlab, as it’s quite possible there is already a feature request for this.

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5

There is also a hotkey (Shift + Alt + V) which places blind or buried vias as tracks are laid.

ksnip_20250829-024724

Annular rings between the connected layers have to be removed later with edits, if required.

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6

Layer pairs are in v9:

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