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References:	<1342432792-29260-1-git-send-email-Russ DOT Dill AT asu DOT edu>
	<20120716114231 DOT 11471 DOT qmail AT stuge DOT se>
Date:	Mon, 16 Jul 2012 09:44:20 -0700
Message-ID:	<CAN0Jx-8sLyqSKEYt435HovgS-VgNLB7oFFz9CGiHzcY5B4Lntw@mail.gmail.com>
Subject:	Re: [geda-user] Merge layers during print
From:	Russell Dill <Russ DOT Dill AT asu DOT edu>
To:	geda-user AT delorie DOT com
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On Mon, Jul 16, 2012 at 4:42 AM, Peter Stuge <peter AT stuge DOT se> wrote:
> Russ Dill wrote:
>> This small patch series adds a couple of attributes in order to allow
>> layers to be merged with special named layers during print. The first
>> is just a 'PCB::skip-print' attribute that can be used to prevent
>> a layer from being printed on its own. The second is a 'PCB::merge'
>> attribute. It can be set to a print layer name like 'fab', or 'toppaste'.
>>
>> So if you want to open up the solder mask on the component side, just set
>> the PCB::skip-print attribute, and then set PCB::merge to componentmask.
>> Draw a polygon where you want soldermask cleared, and done. Same with adding
>> notes and annotations to the fab drawing, or extra windows in the stencil.
>
> Sorry, I don't understand.
>
> On which layer is PCB::skip-print set?
> On which layer is PCB::merge set to "componentmask"?
>
> Is there another use case than what you describe? For what you
> describe I would strongly prefer that there is only a single
> PCB::subtract-from attribute which would be set on the layer
> with only the polygon, and it would be set to "componentmask".


So in my case I want a couple of holes in the paste stencil to line up
with a couple of unplated drills. So I make a new layer, set
skip-print to 1, and set merge to toppaste, then add a couple of zero
length traces that line up with the drill holes.

I have another layer called fab-notes where I have graphics and notes,
such as an arrow with text, "exposed copper ok", or "gold plated
fingers", etc. PCB::merge is set to fab on this layer.

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