Dave,
Used to be +/-.015 for basic boards because some people were still punching boards from production panels (some still are for high-volume commercial/automotive applications).  Ahhh, the good old days...   You can get +/-.005 for many board designs (sometimes a little tighter); boards that are very long/wide may require a larger tolerance.  Scoring is not as accurate as CNC routing unless CNC equipment is used to perform scoring.  See link http://www.accusystemscorp.com/FAQ's%20-%20Index.htm for scoring data with section on tolerances.
Otherwise, completely agree with earlier suggestion to check with your vendor(s) for what they can do.

Roger

-----Original Message-----
From: Dave Chapman [mailto:[log in to unmask]]
Sent: Wednesday, September 11, 2002 9:11 AM
To: [log in to unmask]
Subject: [TN] Board edge tolerances


Hello board people. What is the tolerance for scored and routed edges on a
PWB? Used to be +/- .015
Regards,
Dave Chapman
CSI

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