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From: geda AT psjt DOT org (Stephan =?utf-8?Q?B=C3=B6ttcher?=)
To: <geda-user AT delorie DOT com>
Subject: Re: [geda-user] The nature of gEDA users
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Date: Wed, 27 Jan 2016 17:38:20 +0100
In-Reply-To: <20160127141334.c738feb9dbeb54a7dec3dff8@gmail.com> (Nicklas
	Karlsson's message of "Wed, 27 Jan 2016 14:13:34 +0100")
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"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via
geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> writes:

>> No.  The circle connecting the copper circles is on a different layer,
>> and is not negative, i.e., not a cutout.  The gerber export of a copper
>> layer has no hole where the drill hits.
>
> The circles connecting the layers are drilled thru board and are hence
> a cut out in the board which is later plated. The gerber export of a
> copper layer has no hole where the drill hits but it does not matter
> because the drill will make a hole, a proper model of layer would
> however have a hole there the drill hits.

Well, this is exactly not what I propose.

I do not need a "propper model of a piece of copper" And a via is not a
drilled hole but a body of aluminum that is deposited onto an square
etched into a layer of SiO2.

>> It is the overlap of an object on the copper layer and an object on the
>> via layer that provides the connection.
>
> There is no via layer, 

Yes there is, in my proposeal.

> a via is a composite of objects on different layers. 

That is true.  Including the layer that tells what is conductively
connected.

-- 
Stephan Böttcher Tel: +49-431-880-2508
Extraterrestrische Physik, IEAP, Leibnizstr. 11, 24118 Kiel