Jim, I'm with you. Your point was made 5x5. Thought you brought out the best in folks including me. I can't offer any advanced thinking at this time. Where do you think this thing, that is and always has bee so important, is going. I'm told I still have down hole LCCC boards still working out in some dry duster. They used only polyimide with no core but were "potted" to allow them to work so long with carefully considered pad parameters and excellent process management techniques. How about considering more compliant surfaces, again for the twenty third time? MoonMan --------------------------------------------------------------------------------- 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 the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------