gEDA-user: No-Net Copper

[Rick Collins <gnuarm.2006@xxxxxxxxx>]

At 06:10 AM 12/31/2010, you wrote:
> > This is a DRC issue. The rules should allow any net to connect
> > to no-net copper. No need to restructure the way pcb handles
> > connectivity.
>
> If different nets connect to the same no-net copper there is a short
> between nets.
>
> Consider a large item like you might solder a RFI shield to, that
> covers the perimeter of a large board.
> It would be easy to not notice different nets connected at different
> times, at opposite ends of the board.
>
> So I'd constrain your idea to a single net.  Even then it would be
> better to have a warning that could be turned off per net.
> Maybe that connection was not intentional?

Maybe someone could explain to me why there would be copper on a PCB 
that is not part of a net?  I suppose there might be a reason to not 
connect an RFI shield to ground, but why would you not want to give 
that net a name and make it part of the net list?  I would show that 
RFI shield on my schematic and explicitly indicate that it is not to 
be connected to ground.

Why is no-net copper useful?

Rick 



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