Hi Steve! Kapton tape to hold it temporarily in place during assembly, then after it is formed into final position, very carefully remove the kapton and put some of that conformal coat you've got on it. By the way, isn't that coating kind of thick? I recall a discussion about that on TechNet a few months ago wherein the thick conformal coat appeared responsible for wrecking a CERDIP (not that I see any of those in the picture). Wayne Thayer >>> [log in to unmask] >>> Hi All! I got a rigid-flex assembly here that has multi-layer flex in it, and it had a layer of the flex get torn while de-masking it after conformal coating. I have a picture of the tear here: http://www.stevezeva.homestead.com/files/Flex_Tear.jpg As you see, the tear is on the edge and away from any conductors. The assembly isn't going to be continuously flexed back and forth, it is going to be formed in a fixture and remain that way and installed into the upper-level assembly where it will stay in the formed position. Should I do anything with it other than maybe carefully trim it off? Will any repair actually do anything as far as reliability is concerned? For that matter, has the tear compromised the reliability of the flex in that area? There's been suggestions of some sort of epoxy repair, but I don't think that it will buy you anything as far as reliability is concerned. What do you think I should do? 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 -----------------------------------------------------