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From:	DJ Delorie <dj AT delorie DOT com>
To:	geda-help AT delorie DOT com
Subject:	Re: [geda-help] Four layer board
In-Reply-To:	<dce9827a-01d0-afe7-dea3-7f90173873d1@bitflipper.ca> (geda-help@delorie.com)
Date:	Thu, 02 Apr 2020 17:58:29 -0400
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"Cam (camfarnell AT bitflipper DOT ca) [via geda-help AT delorie DOT com]"
<geda-help AT delorie DOT com> writes:
> I'm using PCB 4.0.2. The board is too complex and tight to route with
> two layers. My next thought is to use four layers with the inner
> layers being devoted to power and ground with almost the entire layer
> copper and using thermals where it connects to pins and a gap for
> non-power pins. But I could see no way to achieve this with PCB. Am I
> missing something or is that just not supported?

pcb supports up to 16 layers in the default config, and more if you
reconfigure.  The default stackup is a 6 layer board with an outline
layer and a spare layer, IIRC.

The Getting Started guide has a demo of a multi-layer board
http://www.delorie.com/pcb/docs/gs/gs.html#SMT-Blinker

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