Mornin' Steve and Earl and All - Reviewing the photo's Steve mentioned sort of puts this thing in a different light - The delams look as if they have occurred INTERNAL to the circuit side cap layer, raising the question of just exactly how did the fabricator lay them up, and of what materials? Second, the boards have a deep amber color, not dark enough to suggest polyimide, but dark enough to suggest that the laminate saw an extended heat cycle during the fab cycle. Steve, I'd take a real good look at the fabricator and his construction of this item - I haven't seen a double clad cap delaminate since the bad old days when we were just getting started in multilayers. I have had a bunch of heartburn with folks who overheated, repressed, etc., then didn't mention it. So far as baking goes - my own preference is to have the fab house package in vapor barrier bags immediately after cleaning and postlaminate bake. Then the boards are ready to use when I get them, and I'm not having to play games with something that was supposed to be finished goods, as received. One last item - different subject - Wave solder operators - IMHO the home grown kind usually work out better - they have no biases and often have a higher level of interest in getting the job done right. Look for a bright youngster with a high aptitude for mechanics and chemistry and you've usually got a good candidate. Yall have a fun day - Kelly ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################