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Date:	Sat, 9 Jan 2016 18:11:58 +0000
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Subject:	Re: [geda-user] (draw on insulating layers)
From:	"Peter Clifton (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On 9 January 2016 at 17:46, DJ Delorie <dj AT delorie DOT com> wrote:

>
> > Sometimes it is neccessary to draw a bord cutout and I guess a
> > filled rectangle with cutouts would make the most sense? Or?
>
> We have an outline layer for that, but really, you can use any drawing
> layer for cutouts if you tell the fab house "this gerber is for
> cutouts".
>

Unfortunately, this is simply inadequate for unambiguous, machine-usable
data. I need to add explicit shape modelling.

Every board manufacturing standard that came after gerber needs better
physical data than this approach can provide.

Peter

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On 9=
 January 2016 at 17:46, DJ Delorie <span dir=3D"ltr">&lt;<a href=3D"mailto:=
dj AT delorie DOT com" target=3D"_blank">dj AT delorie DOT com</a>&gt;</span> wrote:<br><=
blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px=
 #ccc solid;padding-left:1ex"><span class=3D""><br>
&gt; Sometimes it is neccessary to draw a bord cutout and I guess a<br>
&gt; filled rectangle with cutouts would make the most sense? Or?<br>
<br>
</span>We have an outline layer for that, but really, you can use any drawi=
ng<br>
layer for cutouts if you tell the fab house &quot;this gerber is for<br>
cutouts&quot;.<br>
</blockquote></div><br></div><div class=3D"gmail_extra">Unfortunately, this=
 is simply inadequate for unambiguous, machine-usable data. I need to add e=
xplicit shape modelling.<br><br></div><div class=3D"gmail_extra">Every boar=
d manufacturing standard that came after gerber needs better physical data =
than this approach can provide.<br></div><div class=3D"gmail_extra"><br></d=
iv><div class=3D"gmail_extra">Peter=C2=A0 <br></div></div>

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