Hi Ken, Verify the thickness as per IPC-TM-650, method number 2.1.1. This is suggested by the IPC A-600, section 3.3.6. Verify also IPC-6012, section 3.2.6.2 and table 3-2 (under average copper, and minimum thin areas). Although in the present case, it does seem like a reject. Alain Savard, B.Sc. CAE Electronics Ltd. >>> Ken Patel <[log in to unmask]> 09/29/99 01:42pm >>> If my requirement for the copper plating is 0.001" minimum (as spelled out on my fab drawing) and if I am reading it between .0004"-.001", is it rejects or not?. I tried to look at IPC-6012 which is calling out avg copper thickness. I don't how easy to get ave #. This is clearly a reject to me. But I am looking for an expert opinion on the subject. Via Hole in question is 16 mil +3 mil / -10 mils. re, ken patel ______________________________________________________ Ken Patel Phone: (408) 490-6804 1708 McCarthy Blvd. Fax: (408) 490-6859 Milpitas, CA 95035 Beeper: (888) 769-1808 ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################