Hello All, Can someone point me to the section (s) in either IPC-6012 or IPC-A-600 or other standards that explains the acceptance criteria for Solder Mask UNDER-CUTTING? Please go to Steve's web-site following the links below to see a few pictures of a Solder Mask defect that was discovered by our customer (they only stated "reject due to severe undercutting"). With this situation, we are trying to help our China source fix this issue, and we need to help them understand what section (s) of the standard (s) they should be looking at so they can establish a corrective action. http://stevezeva.homestead.com/files/Solder_Mask_Undercutting.jpg http://stevezeva.homestead.com/files/Solder_Mask_Undercutting_2.jpg http://stevezeva.homestead.com/files/Solder_Mask_Undercutting_3.jpg Thanks, Jim --------------------------------------------------- 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 -----------------------------------------------------