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Mail Archives: geda-help/2013/10/05/10:54:55

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May be some arc-line got corrupted somehow, and the "main" pcb part sees a problem in that line and ignores it, while the exporter eats it fine, and exports it as it can.

Try to search the source for any arcs that are precisely 90, 180, 360 degrees. Hopefully there will be few. Make sure none of them make up the offending arc (e.g. by increasing arc thickness).

Are there many such arcs? May be try to make a smaller board with offending example, and include its source - the bug should be reproducible..

Суббота,  5 октября 2013, 16:03 +02:00 от "doragasu ." <esakaforever AT gmail DOT com>:
> 
> I have finished a PCB design. I had some problems because I used the
> toporouter and it looks like DRC algorithm has problems with it (it reports
> lots of DRC errors involving arc tracks that are OK). Anyway, I ignored the
> DRC (I'm almost sure everything is OK) and exported the design to Gerber
> files. Then I opened the Gerber files with gerbv and carefully scrutinized it.
> Almost everything is OK, but I don't know why, a circle appears on the top
> layer where there should be nothing, and this circle is shorting several
> tracks :(.
> 
> I have attached three images:
> 
> - gerbv.png: A screenshot of the problematic zone (top layer) as seen in
> gerbv. There is a offending circle shorting several tracks!
> - geda-pcb: A screenshot of the problematic zone, as seen in geda-pcb. There
> is no circle in this screenshot!
> - gerbtool: A screenshot of the problematic zone as seen in gerbtool (a
> privative tool). Here the offending circle is also displayed, so it looks like
> the problem is in pcb, and not in gerbv.
> 
> I have also verified there is not a clearance problem in this zone. Clearance
> is 8 mil and tracks are separated 9 mil...
> 
> Any ideas? Should I file a bug report?


-- 
Alexey Blinov

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