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	Sun, 15 Jan 2017 11:11:27 -0800 (PST)
Date:	Sun, 15 Jan 2017 20:11:23 +0100
From:	"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Subject:	Re: [geda-user] thru hole slots in PCB
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> > It turns this:
> >
> > X14150Y22220
> > X14150Y25970
> > T02
> > X5831Y6845
> > X5831Y6095
> > X5024Y4579
> > X4274Y4579
> > X3469Y6095
> > X3469Y6845
> > T03
> > X3469Y6470
> >
> > into this:
> >
> > X14150Y22220
> > X14150Y25970
> > T02
> > X5831Y6845G85X5831Y6095
> > X5024Y4579G85X4274Y4579
> > X3469Y6095G85X3469Y6845
> > T03
> > X3469Y6470
> 
> What if you have some other guide holes at .8mm?
> 
> What would you do to stop the script from acting on them?
> 
> Is it OK to use a size for the slot end holes that is impossible
> for practical boards, such as 0.05mm, then run the G85 script, then
> post process the impossible size back to 0.8mm for instance?
> 
> I guess another way would be to not use 0.8mm for any holes
> that are specified that size, and use 0.805mm instead.
> Fabs would just ignore the 3rd digit and choose an actual drill size
> based on their process for plated thru holes.

From the discussion I draw the conclusion file format might be useful, link below.

https://web.archive.org/web/20071030075236/http://www.excellon.com/manuals/program.htm

https://en.wikipedia.org/wiki/Excellon_format

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