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Date: Sun, 5 Mar 2023 20:15:49 +0100
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Subject: Re: [geda-user] Connecting pads directly to polygons (was: Strange
 errors importing gschem into PCB)
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To: geda-user AT delorie DOT com
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From: "Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Op 05-03-2023 om 19:04 schreef DJ Delorie:
> "Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delorie DOT com]"
> <geda-user AT delorie DOT com> writes:
>> AFAICT, pcb's thermal function only works for through-hole components
>> not pads.
> Correct.  There are two valid ways to connect SMT pads to polygons:
>
> 1. Use a line (duh).  I do this for TSSOP and related parts, where the
>     pads are already line-like
>
> 2. Use a separate polygon, and toggle its PolyClear flag (use the S
>     key).  That will make it join with everything.  I do this for
>     inductors and capactors in switchers, for example.

Ah yes, I almost forgot about that one, thanks for reminding me! But as 
you say, with 'S' the resulting polygon is, erm, rather 'promiscuous'. 
Still, I think it's the best option for most of my bigger pads -- and I 
see that the best way to go about is to first create the polygon on a 
spare layer (so that its boundaries are clearly visible), then toggle 
the PolyClear flag, and then Move it to the intended layer.

> Of course, there's always your way:
>
> 2. Change the clear size to zero and ignore DRC
>
> Hey, if it works it works :-)

Well, it used to work without tripping DRC errors -- but now I think 
I'll have to clean up my act :-)

Thanks again, regards,

Richard