Kevin, When you say you are expecting 5-12 micro inches, what metal deposition are your referring to? If you are talking about emersion gold, this sounds like way too much. I do share your concern about on site rework, without having more details. Regards, Bob Metcalf Atotech Western Regional Manager Cell 714-334-7667 E-Mail [log in to unmask] This e-mail and any attachments hereto are business documents of Atotech USA Inc. and may contain CONFIDENTIAL OR PROPRIETARY BUSINESS INFORMATION. Unauthorized disclosure and/or use of information contained in this email is prohibited. If you are not the intended recipient, you may not read, use, disseminate or copy this message or any other files transmitted with it. Kevin Glidden <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 11/11/2008 07:46 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Kevin Glidden <[log in to unmask]> To [log in to unmask] cc Subject [TN] Repair to ImAg plating? Hi everyone, We have an issue with loss of plating adhesion on some ImAg finished PCBs. The affected area is small and consistent in location across the PCBs with the defect. All other areas seem to be ok when tested per a tape test. The PCB supplier is proposing to visit and "repair" them here at our site. I was not even aware plating could be repaired, let alone away from a PCB fab shop without plating lines etc. Is this even possible? I am very hesitant, as I very seriously doubt the control and/or quality of the "repair" process. At the very least, how would thickness be controlled? We specify micro 5-12 inches in thickness per IPC-4553, and the overall PCB is to meet IPC-6012 Class 3. Anyway, they described the process as follows: I will send you the solution by Fedex in a small bottle. Once you have received it, I will come to your facility and repair the boards. I will need a hot plate and Pyrex container to heat-up the solution to 120 F. Do you have these two items? Otherwise I will bring them with me. I will clean and repair the boards locally. Once it is done, I will do the tape test to make sure the adhesion of the silver is adequate. My little voice is screaming "NOOOOOOOOOOOOOOOOOOOOOOO!!" Thanks in advance, Kevin --------------------------------------------------- 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 -----------------------------------------------------