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Date:	Mon, 3 Jun 2013 22:56:33 -0400
Message-ID:	<CACPio-6-ODA0R-dSYG71u4tckAGddVa96_9ToPHY52NxzOwzLw@mail.gmail.com>
Subject:	Re: [geda-user] move elements to other side
From:	Nathan Stewart <therealnathanstewart AT gmail DOT com>
To:	"geda-user AT delorie DOT com" <geda-user AT delorie DOT com>
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For multilayer boards, only the outer layers really have a flip side. All
the inner layers are laid down looking through one side or the other, but
there is no obverse.  So, I think we can actually restrict it to traces on
the outer layers. The question then becomes "outer layers" vs "outer
layer".  Just as the inner layers have no obverse, the bottom of the board
is really conceptually a backside only, as it has no substrate "under"
it.However... I think it still needs to handle inner layer, because... the
point of this is actually to make the traces line up.  So the inner layers
need to be at least mirrored. I think they really should also be mirrored
in order. Ie, on a 4 layer board, layer 2 becomes layer 3 and layer 3
becomes 2. But reordering the layers is simple, and can be done currently.

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<div dir=3D"ltr"><p>For multilayer boards, only the outer layers really hav=
e a flip side. All the inner layers are laid down looking through one side =
or the other, but there is no obverse.=A0 So, I think we can actually restr=
ict it to traces on the outer layers. The question then becomes &quot;outer=
 layers&quot; vs &quot;outer layer&quot;.=A0 Just as the inner layers have =
no obverse, the bottom of the board is really conceptually a backside only,=
 as it has no substrate &quot;under&quot; it.However... I think it still ne=
eds to handle inner layer, because... the point of this is actually to make=
 the traces line up.=A0 So the inner layers need to be at least mirrored. I=
 think they really should also be mirrored in order. Ie, on a 4 layer board=
, layer 2 becomes layer 3 and layer 3 becomes 2. But reordering the layers =
is simple, and can be done currently. <br>

</p>
</div>

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