Re: gEDA-user: PCB Lines Over Polygons & Layer-groupings

[Ales Hvezda <ahvezda@moria.seul.org>]

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-- Cut here --
From: Holger Waechtler <holger@qanu.de>

Levente KOVACS wrote:
> On Mon, 14 Jun 2004 17:22:09 -0400
> William Dieter <william.dieter@gmail.com> wrote:
> 
> 
>>Is there any way to add clearance for lines in the same layer group as
>>polygons, but in different layers?  I am using pcb-20040530.
> 
> 
> I think that does not makes so much sence. Imagine, that you have 2
> layer board. You have a line at the top layer, and a ground plane at the
> bottom. Why should the botom layer cleard? Or, another example. You have
> a 3 layer board. You want to make a stripline. How can you do this, if
> you clear the top and the bottom layer with your line in the middle?

In some cases you want to place a special (wider) clearance area around 
the board outline for all polygons and throw away all copper outside 
this outline -- in this case you would want to define this special 
clearance on the layer where the outline is drawn...

Holger