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> Hi guys,google knows.
> Last night I was thinking about 3 and 4 layer PCBS and can't seem to
> figure out how they do them.
> Single sided - easy, we all do that.
> Double sided - easy, we do that as well with some alignment issues.
> But once you get beyond that, I realize a different manufacturing
> process has to be done to get the layers. How do they do it?
> Chris