>I would also say the copper pour must be the last step in the
>process. All traces are finished and the board is basically working
>before i add a copper pour.
Doesn't have to be with Eagle. By design, the pour doesn't exist when
you load the saved board. A ∗∗repour∗∗ will only occur after you use
the ratsnest command. For all intents and purposes a repour is like
pouring for the first time. In other words nothing is written in
stone (or copper).
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>
> On Fri, 10 Mar 2006 17:33:29 +0100, kilocycles <kilocycles@...>
> wrote:
>
> > The writer's description of the copper pour process is not
completely
> >
> > accurate. He says to rip up the traces and let the autorouter
work
> >
> > while doing the pour. I've never done it that way. I do the pour
> >
> > (polygon gnd) command ∗after∗ my board is completely
routed...auto,
> >
> > manual or a combination of both sometimes...and I've resized the
> >
> > traces, etc.
> >
> >
> > Cheers,
> >
> > Ted
>
>
> I would also say the copper pour must be the last step in the
process. All
> traces are finished and the board is basically working before i add
a
> copper pour.
> This is for one or two layer boards, if you have more layers with
> dedicated ground and power planes you would not need to route
ground
> traces beforehand.
>
> I do not know the peculiarities of eagle, since the UI is way above
what
> my nerves can take, but it should be the same principle.
>
>
> By the way, anyone know advanced PCb layout pages/online
courses/faqs/...
> please let us know.
> Someone suggested that analog devices online seminar on PCB design
a while
> ago, i watched it but thought it rather poor. The information i
learned
> was minimal, and the speaker was really bad (maybe it has to do
with the
> transfer/bandwidth limitations).
> I do not know if this is in general a problem with analog courses,
but the
> ones by national semi are great in comparision.
>
> I would like to know more about design considerations concerning
ground
> planes / copper pours especially.
>
> ST
>