PCB Expert, What will be the price difference (in %) between 2 layer boards and 4 layer boards using Roger's material? Both are impedance control boards. 4 layers board is 62 thick while 2 layers board is 25 mil thick. The size of the board is 3"X5" for both layer counts. I know it will be a volume specific so let's assume 100, 500 & 1000 re, ken patel --------------------------------------------------------------------------------- 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 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 ---------------------------------------------------------------------------------