The really excellent aspect of Joel Robbins' advice is that the process of removing the gold will almost certainly also remove the cause of the original "void", thus creating a much better bond to the gold. With any sort of brush plating, this is not likely to occur. Rudy Sedlak RD Chemical Company --- On Thu, 2/25/10, Joel Robbins <[log in to unmask]> wrote: From: Joel Robbins <[log in to unmask]> Subject: Re: [TN] Touch up on ENIG To: [log in to unmask] Date: Thursday, February 25, 2010, 2:53 PM Elaine, In response to your question what we recommend is take the unpopulated boards, etch the gold completely and apply again. This is the best way to have a good quality board for assembly. There are of course some "brushing" methods for ENIG too, but if the "bad" areas are large, then can result in bad solder joints. Best regards, Joel Robbins Regional Sales Manager Eltek USA Inc. 25 Orchard View Drive Suite 207 Londonderry, NH 03053 Office: (603) 421-0020 Cell: (603) 553-5572 www.eltekglobal.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 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- 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 -----------------------------------------------------