Don't know if Feinfocus X-ray has enough resolution, but may be worth trying. A Feinfocus fitted with a Hamatsu image processor may fix it. There is a contrast difference between Copper and Tin/Lead. My two Bequerels /Inge -----Ursprungligt meddelande----- Från: TechNet [mailto:[log in to unmask]] För [log in to unmask] Skickat: den 13 oktober 2007 18:27 Till: [log in to unmask] Ämne: [TN] URGENT HELP NEEDED:- non-destructive method for via hole plating thickness Hi to all, Looking for service or friendly (aren't we all) PWB manu. who has the capability to measure COPPER plating thickness in via holes in FINISHED BRD. i.e. with HASL in via holes. NON-DESTRUCTIVE TESTING Description of brd:- 20 layers ~150 mils thick Via holes are 20-22 mils finished. Required plating is 0.0015 min. A few I have learnt about are CMI (probe inside the hole) & UPA (resistance measurement) Rush 818-415-0030 ************************************** See what's new at http://www.aol.com --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------