X-Authentication-Warning:	delorie.com: mail set sender to geda-user-bounces using -f
Date:	Thu, 25 Jun 2015 12:51:52 -0400
Message-Id:	<201506251651.t5PGpqmO020374@envy.delorie.com>
From:	DJ Delorie <dj AT delorie DOT com>
To:	geda-user AT delorie DOT com
In-reply-to:	<20150625163731.GA18117@visitor2.iram.es> (geda-user@delorie.com)
Subject:	Re: [geda-user] [RFC][PATCH] PCB: Allow non rounded clearances for
	rectangular/square pins and pads
References:	<20150625163731 DOT GA18117 AT visitor2 DOT iram DOT es>
Reply-To:	geda-user AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
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Not that I'm discouraging the patch (options are always good) but this
is why we don't do square clearance by default:

http://www.delorie.com/pcb/notches.html

Just something to keep in mind :-)

IIRC I talked with a pcb fab "insider" at the time and he agreed that
square clearances made sense for the mask (where X and Y alignments
were independent) but round clearances were OK for copper (where the
problem is etching, not X and Y alignment).

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