kicad-developers team mailing list archive

[Ian Woloschin <ian@xxxxxxxxxxxxx>]

That was my original thought, but I wasn't sure if that was too heavy
handed since it could break existing designs?  Though of course, they'd be
bad designs if they relied on this as a "feature".  If the choice is to
force a zone re-fill I'd request that it does a zone re-fill before DRC as
well.

Should this be filed as a bug?  I'm happy to do so, but I thought this
could benefit from some discussion first.

The good news, I just found my 3/64 bits from the last time I did this, and
drilling out the via through the inner layers does indeed disconnect my
power and ground nets, so this was definitely my problem.  Easy enough to
fix, especially since this was only 5 prototype boards, but I'd have been
real mad at myself if this was a large run!

-Ian

On Mon Nov 17 2014 at 1:40:44 PM Andrew Zonenberg <
azonenberg@xxxxxxxxxxxxxxx> wrote:

> That bit me once too. Perhaps the best option is to force an automatic
> zone re-fill before exporting gerbers?
>
> On Mon, 2014-11-17 at 18:22 +0000, Ian Woloschin wrote:
> > Hi folks,
> >
> >
> > I had a question regarding a "sort-of-but-not-really" bug that's
> > bitten me a couple of times now.  Most of my boards now are 4 layers,
> > with the two inner layers being Power/Ground zones.  This generally
> > works really well, but on at least two fairly complex boards, I've had
> > the misfortune of not remembering to quadruple check that no zones are
> > colliding with vias.  I believe this is usually caused by forgetting
> > to redraw zones after moving a via, which is entirely my own fault,
> > but I just did a quick check and I don't see any indication of
> > potentially colliding zones, and my DRC passes without any issue :(.
> > Can the DRC detect colliding Nets?  Is this something that could be
> > exposed via Python?
> >
> >
> > Unfortunately I cannot share any of these boards, but it's pretty easy
> > to replicate this (4 layer board, punch a via through, fill Inner
> > layers with zones, move via, run DRC).
> >
> >
> > In any case, I wanted to ask about this before filing a bug report or
> > feature request, because while it's not technically incorrect
> > behavior, it's behavior that is not intuitive based off of all the
> > other awesome things KiCad does for the board designer.
> >
> >
> > -Ian
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> --
> Andrew Zonenberg
> PhD student, security group
> Computer Science Department
> Rensselaer Polytechnic Institute
> http://colossus.cs.rpi.edu/~azonenberg/
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