Lorraine, Depending on quantities involved, it may be cost effective
to have the spec call out a slightly larger dimension(to keep from going
undersize, and then pay someone to trim or sand the boards down to within
your final spec.  Just my two cents worth! Good luck, Dave Dixon,
Aero-Mach Labs Inc.


On Tue, 18 Feb 2003 16:58:04 -0000, Reid, Lorraine
<[log in to unmask]> wrote:

>Can anyone please advise if it is possible to rout a bare PCB (fab) to a
>tolerance of +/- 0.05 mm?  The board is 0.8mm thick.
>
>One of our vendors is telling us that they can't manufacture to this and
>that they don't believe it is possible.  A second vendor has led us to
>believe that they can do but experience tells us that they aren't making
>it!  For info the boards are designed to fit snugly into a plastic
>housing with no other means of fixing - hence the tight tolerance.
>
>Thanks in advance for any feedback received.
>
>Lorraine Reid
>
>
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