Steve: I would fix this scratch on cowercoat. Here you can find some information regarding "liquid Kapton". This is from COATES, two components 1. XV601T-2-ORANGE 1/FLEX RES .67K; CAWN 1373 2. XV601T-2 CLEAR SCR 1/FLEX HARD .33K; CAWN 1372 ----- Original Message ---- From: Steve Gregory <[log in to unmask]> To: [log in to unmask] Sent: Thursday, March 15, 2007 10:35:14 AM Subject: [TN] Flex Circuit Scratch... Morning All! There were a few rigid flex assemblies brought to me this morning with some scratches in the coverlay of the flex. They are pretty minor, but they do go down into some traces a bit. I don't think the traces are really signal traces, but are part shielding pattern on the outside of the flex. Check-out: http://stevezeva.homestead.com/files/Flex_Scratch.jpg My question is; is this a defect that has to be repaired, and if so what do I use to repair the scratches with? Normally I would use soldermask on a rigid board if the scratches doesn't reduce the trace cross-section beyond limits, but these traces aren't signal traces, and this isn't a rigid board. I think this happened during the de-masking operation after conformal coating... Thanks! -Steve Gregory- --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------