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From: Kevin Redon <ml AT mail DOT tsaitgaist DOT info>
To: geda-user <geda-user AT delorie DOT com>
Subject: Re: [geda-user] square clearance
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Date: Thu, 19 Sep 2013 09:38:39 +0200
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Excerpts from DJ Delorie's message of 2013-09-18 19:24:58 +0200:
> 
> > Aren't square clearances manufacturable?
> 
> http://www.delorie.com/pcb/notches.html
> 
> In general, sharp corners, inside or outside, are less preferred than
> rounded transitions, manufacturability-wise.

that makes total sense.

the proper solution might be to allow polygons and holes (or add elementpolygon), but that seems to be quite a hard task
http://archives.seul.org/geda/user/Feb-2007/msg00061.html