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Mail Archives: geda-help/2013/07/02/10:02:11

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From: "McKay, Roy L [PHYSA]" <mckay AT iastate DOT edu>
To: "geda-help AT delorie DOT com" <geda-help AT delorie DOT com>
Subject: [geda-help] Split negative & positive solder mask
Thread-Topic: Split negative & positive solder mask
Thread-Index: Ac53LIj6IvnhDgsNTc6SN33GM4mIug==
Date: Tue, 2 Jul 2013 14:00:47 +0000
Message-ID: <D2FF84E1E2337A488420C56B924CA62C3A73E252@ITSDAG2D.its.iastate.edu>
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Hi All,

   I have a requirement with splitting the bottom soldermask into two secti=
ons. The bottom layer is a split ground plane with an area seeded with digi=
tal components and the remainder seeded with a number of signal related via=
s that are not grounded.  The section containing digital components is to c=
overed with the usual mask covering everywhere except the pads.  The second=
 section is opposite, cover the via holes and expose all the copper plane. =
 Hence a negative of the usual soldermask.

   Does anyone know how to pull this off?  I'm using PCB 20110918 on Fedora=
 16.

   Thanks in advanced,  RM



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<p class=3D"MsoNormal">Hi All,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; I have a requirement with splitting the=
 bottom soldermask into two sections. The bottom layer is a split ground pl=
ane with an area seeded with digital components and the remainder seeded wi=
th a number of signal related vias that are
 not grounded. &nbsp;The section containing digital components is to covere=
d with the usual mask covering everywhere except the pads.&nbsp; The second=
 section is opposite, cover the via holes and expose all the copper plane.&=
nbsp; Hence a negative of the usual soldermask.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; Does anyone know how to pull this off?&=
nbsp; I&#8217;m using PCB 20110918 on Fedora 16.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; Thanks in advanced,&nbsp; RM<o:p></o:p>=
</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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