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Date:	Tue, 15 Jul 2014 19:11:48 +0200
From:	Bernd Walter <ticso AT cicely7 DOT cicely DOT de>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] thermal flag in footprint?
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On Tue, Jul 15, 2014 at 10:05:34AM -0700, Dave Curtis wrote:
> On 07/15/2014 09:24 AM, DJ Delorie wrote:
> >"Holes" aren't plated through so they're useless for electrical
> >connectivity or heat sinks.
> ??  But if you put a hole through a board with polygon on both sides 
> doesn't it plate? What keeps it from plating?

During production there are two drilling steps.
One before plating, so holes get copper and one after plating
for holes without copper.
In fact you can plate holes without anything on top or bottom,
just to advised for mechanical reasons.

-- 
B.Walter <bernd AT bwct DOT de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.

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