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Subject:	Re: [geda-user] pcb: solder mask clearance in DRC?
From:	Stefan Salewski <mail AT ssalewski DOT de>
To:	geda-user AT delorie DOT com
Date:	Tue, 17 Dec 2013 13:41:53 +0100
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On Tue, 2013-12-17 at 10:02 +0000, Matt Rhys-Roberts wrote:
> Hi all,
> 
> Is it possible to somehow cause the DRC to flag up when solder mask 
> clearance is too small for manufacture?
> 
> I have inherited several SO8 footprints to choose from, and I didn't 
> notice that the one I picked had barely any SM clearance around the 
> pads. This cost us an extra 5% when the board makers detected it was 
> outside the standard specs for their process.
> 
> No blame, just nice to see this added to the next generation DRC.
> 
> Any comments please?

Indeed in my opinion solder mask clearance is more a board property than
a property of individual components on that board.

So I asked about 4 years ago a similar question -- as I remember it is
possible to set solder mask clearance to the same value for all pieces
by a trick: select all, shrink solder mask to zero, and then increase
it. Sorry, I can not remember details. Of course it would be fine to
have a way to ask minimal solder mask of all parts on the board -- if it
is not already available it should be a nice task for you during
christmas holiday. Of course, checking with gerbv is still a good idea.

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