Carol, There are numerous PCB Fabricators with cavity build experience. I would recommend two, in the US try Merix, in Asia try Topsearch. I have had good luck and relationships with both of these large scale manufacturers. For smaller scale there are lots of houses in the Silicon Valley still that specialize in small quantity exotic builds. Try Steamline Circuits in San Jose. If you ask nice any house will likely be glad to do prototype quantities(read this as cavity builds equal high margins for fab). Good Luck, FNK --------------------------------------------------------------------------------- DesignerCouncil 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 DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ---------------------------------------------------------------------------------