I prefer to cover a trace cut. Not so much for moisture ( moisture can still be absorbed through the rest of the board. ) but to make sure that nothing can short out the cut. I usually just use a soldermask overcoat pen for this. Unless it is a deep cut as on an internal layer. Charles Caswell -----Original Message----- From: Bissonnette, Jean-Francois [mailto:[log in to unmask]] Sent: Wednesday, October 16, 2002 8:56 AM To: [log in to unmask] Subject: [TN] conductor cut: IPC-7721 Hi all, After cutting a trace, is it always necessary to add epoxy to fill the cut mark left on a board? If it is not filled, is there any risk of humidity infiltration that could cause problems latter in the field? Any help would be appreciated. Thanks in advance! Jean-François Bissonnette Vérificateur, Contrôle de la Qualité Électronique Produits et Procédés Vapor Rail Inc. [log in to unmask] WABTEC CORPORATION CONFIDENTIALITY NOTE The content contained in this e-mail transmission is legally privileged and confidential information intended only for the use of the individual or entity named herein. If the reader of this transmission is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this transmission is strictly prohibited. --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 --------------------------------------------------------------------------------- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------