Doug, Though have answered your question, it is a good one. I like the finish and find it as easy to work with as you say. Way back when, we used similar finishes as "Sealbrite" and it served some well but did not find wide use either. IBM really used a lot of OSP starting in the mid 80's. Like all finishes, it's difficult to sell one over another. In recent times, trends tend to metal coatings instead of organic but the silvers and tins are a combination. Give me OPP/OCC's any time. I just can't sell it to clients and few board shops deal with it much because so few use it. Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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 ---------------------------------------------------------------------------------