Jerry, It would seem that the routed edge would be smoother and incur much less mechanical damage to the glass/epoxy interface (assuming a sharp bit) than the traditional pizza cutter where one segment is literally torn from the other. My vote is that pizza cutting will aggravate the problem of liquid incursion, but would not hazard to guess by what acceleration factor. Are they willing to have fiberglass chunkies floating around in their chemical??? Pizza cutting will provide many more. Without telling you what chemical it is, one can only generalize and suggest that pizza cutting would yield more loose particulates and more mechanical damage to the separated edge of the board. You are likely to get many good comments on this question. Steve Creswick http://www.linkedin.com/in/stevencreswick -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jerry Dengler Sent: Monday, March 29, 2010 1:53 PM To: [log in to unmask] Subject: [TN] V-score VS routed edge Hello all, We have a customer with a unique application. Part of a 6 layer FR4 PCB will be immersed in a chemical flow. They conducted tests using a board with routed edges and were successful. This application would work better if we could use V-scored boards. The boards would be separated with a "pizza cutter" style de-paneler. The total edge length in contact with the chemical would be almost 18". Does anyone have any information to suggest the V-score would perform worse than a routed edge when it came to chemical intrusion. Unfortunately I do not know what the chemical is so I am unable to tell you what it is. Thanks for any help you can give. Jerry Dengler Production Manager Pergamon Corporation ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------