Sorry, I sent out a typo last night. Rogers Circuit Materials Unit used to have a cost matrix on page 32 in their Circuit Materials Manual. Contact Rick Jansen at (602) 917-5270. Andy Magee Flex Guru - Consulting (937) 435-3629 ps. Another typo from a couple of days ago. My Thermal Analysis programs are really posted at: http://www.geocities.com/CapeCanaveral/Launchpad/9641/program/program.html ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################