This is a fabrication issue and I would suggest that you post it on the
TechNet Forum. You will get a good discussion there from the folks who
actually do the cutting.
I do know that a router bit can be flat on the tip and setting the depth of
the cut should be simple. Don't forget 'depth tolerance'.
You would have to consider the inner edge as the finished edge in regards to
spacing to board edge. I think that you might need to know if a set-depth
routed cut will cause more vibration and higher risk to edge components and
traces.
Barbara J. Burcham, CID
PCB Designer
Fairfield Industries
Sugar Land, TX 77478
281-275-7687 Work
281-275-7550 Fax
[log in to unmask]
-----Original Message-----
From: Hybiske, Tom [mailto:[log in to unmask]]
Sent: Wednesday, February 06, 2002 12:08 PM
To: [log in to unmask]
Subject: Re: [DC] routing the thickness of a board
> -----Original Message-----
I've done this in a previous life in order to accommodate a .093 PWB with
preselected .063 card guides. There was no copper involved, only laminate.
Yes, it was expensive, but I needed more layers, and couldn't fit them onto
the thinner material.
Tom Hybiske
Bose Corporation
The Mountain
MS 15D
Framingham, MA 01701
(508)766-6194
>
> 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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