My suspicion is that you want to remove a LOT of copper, and not touch a very light coating of Silver...and whereas most copper etchants attack silver only a little...only a little may well be too much for you.

Suggest you look at Peroxide/Sulfuric types... contact my honorable competitors, Electrochemicals, if you are going to be doing this in a production mode, they seem to have this technology pretty well wired.

Rudy Sedlak
RD Chemical Company

---------------------------------------------------
Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------