Hey Jeff - Better yet, compile the files into a book. Maybe Eddie will even buy it. Sorry Eddie - but Jeff said it for me, too. We're not selling books here - but why re-invent the wheel. Blankenhorn and Solberg are among the best authorities in SMT design. Phil Z ################################################################ TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################