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Subject:	Re: [geda-user] thru hole slots in PCB
From:	Jonatan =?ISO-8859-1?Q?=C5kerlind?= <jonatan AT akerlind DOT nu>
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Date:	Sat, 14 Jan 2017 15:01:11 +0100
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On Fri, 2017-01-13 at 17:21 +0100, Nicklas Karlsson
(nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
> If it was possible to draw board outline as a solid polygon and make
> cut out then board should be well defined.
> 
> Even though board is defined as a solid shape as a real board is it
> may still of course make sense to show only outline, maybe even in
> gerber. It is claimed here https://sourceforge.net/p/gerbv/feature-re
> quests/89/ G85 is used to define slots in Excellon drill file but for
> CNC g-code is a boring cycle which I am not totally sure what it do.
> 
> I know Igor have make some work in pcb-rnd to make layer more general
> but have not yet had time to look at it.
> 

I have used an approach of putting two vias in pcb, then changing the
drill file to add route commands (using M15/M16 IIRC) between those
vias. I also found and refactored a patch for gerbv to support viewing
of this. Have ordered boards with slots like this, which turned out as
intended. This was done approximately two years ago and I have not
since made any new boards, so I am not familiar with the recent state
of pcb or pcb-rnd. 
The gerbv patch can be found here:
https://sourceforge.net/p/gerbv/patches/56/

-- 
Jonatan Ã…kerlind
+46702002897

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