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To: geda-help AT delorie DOT com
From: Carlos Moreno <moreno+geda-help AT mochima DOT com>
Subject: [geda-help] Pins and vias: different clearance per layer
Message-ID: <1e0f83fc-2500-cef4-278e-e0af8b1f435e@mochima.com>
Date: Fri, 9 Dec 2016 09:50:54 -0500
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Reply-To: geda-help AT delorie DOT com

Hi,

Essentially, what I'm trying to do is connect a pin or via
to a plane (e.g., ground plane) without thermal release
(i.e., solid connection).

If I only have ground plane and no other layer has copper
filling, then I simply set the clearance = 0 for the via.
However, if I have one ground plane and one Vcc plane
(or copper filling in the signal layer(s)), then the trick
doesn't work.

Can I accomplish this?   Maybe instead of playing with
the clearance there may be a style for thermal that
makes a solid connection (or at least control over the
amount of thermal release, etc.)

Any tips?  (a solution involving manually editing the
text file is perfectly fine)

The only "hack" I can think of is rather ugly: generate
Gerber files before and after changing the clearance to
zero;  from the set generated after changing clearance
to zero, keep only the layer for which we want the
connection.  (I'm hoping there will be a "cleaner" way;
this hack gets complicated if we have many different
connections to different planes!)

Thanks,
Carlos
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