Re: composite layers and negative plots

barkerben a écrit :

>;One more question (I have answered the above myself via
>experimentation). I got the following from Olimex, who I use to etch
>boards:
>
>Hi,
>Your gerbers contain composite layers and negative plots (G36 G37
>commands).
>On such gerbers we can't do DRC check, panelization nor to ensure
>correct
>phototools plotting.
>Please ask your cad vendor how to generate your copper pour with
>stroke
>hatch filling instead composites and send your files again.
>Thanks
>
>;
>
G36 and G37 commands are *NOT* composite layers and negative plots.

this a polygon fill command (start and end fill polygon), used to draw
rectangular pads when the pad orientation is not 0, 90, 180 or 270
degrees (for instance 22.4 degrees) or trapezoidal pads.

This command is a very common GERBER command...

To understand the gerber rs274x format, see:
http://www.artwork.com/gerber/274x/rs274x.htm

--
Jean-Pierre CHARRAS
Maître de conférences
Directeur d'études 2ieme année.
Génie Electrique et Informatique Industrielle 2
Institut Universitaire de Technologie 1 de Grenoble
BP 67, 38402 St Martin d'Heres Cedex

Recherche :
Grenoble Image Parole Signal Automatique (GIPSA - INPG)
46, Avenue Félix Viallet
38031 Grenoble Cedex

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.

Ah, that makes sense. I tried producing gerbers with fill, no problem.
Then I produced one with some altered pad shapes, and the commands in
question appeared. I have emailed Olimex to ask them about this

Thanks for the afvice,

Ben

--- In kicad-users%40yahoogroups.com">kicad-usersyahoogroups.com, jean-pierre charras - INPG
<;jean-pierre.charras...> wrote:
&gt;
> barkerben a écrit :
>
> >One more question (I have answered the above myself via
> >experimentation). I got the following from Olimex, who I use to etch
> >boards:
> >
>; >Hi,
> >Your gerbers contain composite layers and negative plots (G36 G37
> >commands).
> >On such gerbers we can't do DRC check, panelization nor to ensure
> >correct
> >phototools plotting.
> >Please ask your cad vendor how to generate your copper pour with
> >stroke
> >hatch filling instead composites and send your files again.
&gt; >Thanks
> >
>; >
> >
>; G36 and G37 commands are *NOT* composite layers and negative plots.
&gt;
> this a polygon fill command (start and end fill polygon), used to draw
> rectangular pads when the pad orientation is not 0, 90, 180 or 270
> degrees (for instance 22.4 degrees) or trapezoidal pads.
&gt;
> This command is a very common GERBER command...
>
> To understand the gerber rs274x format, see:
>; http://www.artwork.com/gerber/274x/rs274x.htm
&gt;
> --
> Jean-Pierre CHARRAS
> Maître de conférences
> Directeur d'études 2ieme année.
&gt; Génie Electrique et Informatique Industrielle 2
> Institut Universitaire de Technologie 1 de Grenoble
> BP 67, 38402 St Martin d'Heres Cedex
&gt;
> Recherche :
> Grenoble Image Parole Signal Automatique (GIPSA - INPG)
&gt; 46, Avenue Félix Viallet
> 38031 Grenoble Cedex
&gt;

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