Hello all TechNetters, What is the difference between using 1 ply of laminate or 2 in fab boards? Is there a REAL concern that 1 ply will not be sufficient electrical insolation? Or has resins now evolved enough to make it safe to use just one ply? I deal mostly, but not exclusively, with the military and would like to make sure of my statement that 1 ply should be sufficient. Can I get reliable references anywhere concerning this issue, one way or the other? Thanks to all participants in this discussion. Pete _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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 ---------------------------------------------------------------------------------