Re: gEDA-user: next PCB release - 1.99za vs 4.0

[John Doty <jpd@xxxxxxxxx>]

On Sep 10, 2010, at 1:01 PM, DJ Delorie wrote:

> I figure we need each layer to specify:
> 
> * type (copper, silk, mask, anti-copper, keepout, etc)

There are no types, there are only properties.

The conductors may not be copper. I've even worked with a board that had two different conductive materials on the same physical layer.

The support layers are also not always FR4. The board I noted above had different numbers of layers in different places, and the support layers weren't all the same material and thickness.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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