Re: gEDA-user: Finished drawing two sided board in PCB. Any comment?

[Darrell Harmon <mail@xxxxxxxxxxxx>]

Leva wrote:

> On Fri, 29 Apr 2005 11:58:17 -0400
> 9000 VAX <vax9000@xxxxxxxxx> wrote:
>
>  
>
> > I don't use thermal around vias because I don't know how to do that in
> > PCB. Also it seems there is no need for vias to have thermal, since
> > vias are solder masked by PCB and I will be unable to put solder in
> > the via holes any way.
> >    
>
> How do you connect a via fully to a polygon? I don't know how to do it. I use
> thermal... and yes, it makes no sence.
>
> Levente
>
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>  
I use the thermal for non critical things.  Where it really matters, I 
put a polygon on the plane and set it not to clear.  I have an absolute 
mess under a 256 ball 1mm pitch BGA in a board I am working on.  It is 
hard to keep the ground plane together with all those vias.  When I get 
some time I may see if I can make toggle thermal have 3 states: clear, 
thermal, don't clear.  That is how Eagle was (not that I would ever go 
back).  In the past I have had a hard time understanding how the PCB 
code works, but maybe with time I can figure it out.

--
Darrell Harmon
100x100mm SBC running GNU/Linux:
http://dlharmon.com/sbc.html