Victor, What are you doing - reinventing the wheel? IPC-2315 does it for you as do many books, consultants (me for one), and other emerging stuff that's been done before but who's reliability has not been proven though new IPC reliability and qualification documents are in the works. No such thing as an IPC-6012 counterpart yet. Go carefully as there are many ways to skin a cat, while using up its nine lives, here. If it isn't flight hardware - go play and let us all know how it works out. You know the HDI board shop players, right? Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 ---------------------------------------------------------------------------------