Hello Mark, I believe that Section 5 of IPC-2222 has what you are looking for. Unfortunately, it doesn't appear to give any typical values for the parameters. (maybe something that could be included) One of our manufacturers has a chart of guidelines that may help though. Angle of 'V'=45 degrees min distance from copper feature to edge of V = 0.5mm V-groove width = 0.16mm for 0.8mm thick boards, 0.5mm for 1.6mm, 0.8mm for 2.4mm. 0.1mm horizontal separation between the point of the Vs. Vertical separation between V points = 0.4mm for 0.8mm thk, 0.5 for 1.6mm, 0.6 for 0.8mm Worth checking with your intended manufacturer. regards, Phil. Phil Dutton C.I.D. Senior CAD Technician IPC Certified Interconnect Designer Tenix Defence Systems Pty Ltd Systems Division - Adelaide Second Avenue, Technology Park, Mawson Lakes. SOUTH AUSTRALIA 5095 -----Original Message----- From: Mark Hargreaves [mailto:[log in to unmask]] Sent: Thursday, 22 March 2001 7:38 To: [log in to unmask] Subject: [TN] PCB Scoring spec Hi All, Is there an IPC (or other) spec that covers the scoring of PCB's? Thanks, Mark Hargreaves ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------