Hi Susy,

This used to be SO common, especially with rack-n-panel board (boards to
fit in an enclosure. This isn't all that tough, nor is it really that
much more expensive (especially when you consider how many additional
hours are spent trying to squeeze two "routing" layers out of a board.
Just spec out the area, and thickness (plus the tolerance) you want to
achieve per these card edges, and the vendor should not say a word to
you. You probably won't even see a cost (it's covered in NRE and stuff).
One thing, don't even try to put plating in these areas though!).

Best of luck.

Mitch

---------Included Message----------
>      Date: Wed, 6 Feb 2002 11:58:19 -0600
>      From: "Susy Webb" <[log in to unmask]>
>      Reply-To: ""(Designers Council Forum)""
<[log in to unmask]>, "Susy Webb" <[log in to unmask]>
>      To: <[log in to unmask]>
>      Subject: [DC] routing the thickness of a board
>
>      I've got a good one for the gurus out there!
>
>      And engineer just asked me if a rigid board could have an area
(an edge
>      actually) routed such that the overall area of the board is one
thickness
>      (.125), and the routed area is another (.062) See the side view
picture
>      below...
>
>
>      routed area
>                \   __________________
>              _____|                  |
>      .062    |_______________________| .125
>
>
>
>      Other than the obvious issues of controlling routing depth, and I
imagine a
>      hugh cost, what else should I be concerned about? Can it even be
done??? We
>      were thinking that it might be easier to build two boards and
fuse them into
>      one, but would the alignment problems kill that idea?
>
>      TIA for any help,
>      Susy
>
>      Susy Webb, CID
>      Sr PCB Designer
>      Carlo Gavazzi Computer Systens
>      281-875-1500 x33
>      [log in to unmask]
>
>
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