> I've been looking for a PCB fab to make cheap PCBs in small quantities
> (1-3) for prototyping (I'm in the US). For 2-layer boards I'd want
with
> soldermask/silkscreen, and I also work on 4-layer boards as part of a
> research project at school.

I have use both barebonespcb.com (a division of 4PCB.com, AKA Advanced
Circuits) and AP Circuits (Alberta Printed C.).  Both of these companies
are serious vendors, who offer a range of capabilities starting with the
minimum thing that could be called a PCB and working up to 16-layer RF
monstrosities with blind and buried microvias, ceramic stiffeners,
teflon, etc. etc.

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