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 --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------