A lot depends on the solder mask material. If it is dry film, for example, then it is possible, with an emulsion of methylene chloride in a 20% sodium hydroxide solution (remove and rinse as soon as the coating crinkles). If it is based on an epoxy (and many are) it is clearly impossible for a solvent to differentiate between a cured mask and the substrate and you would cause much more harm than good. Brian Tim Mack wrote: > All, > > > > I have run into an issue with a board that has solder mask covering some > pads. Is there a product/solvent that can remove the solder mask easily > with out etching the copper? I would rather chemically remove it than > manually scrap it off with a razor blade. > > > > Thanks in advance, > > > > Tim Mack > > Research Engineer > > NDSU CNSE > > www.ndsu.edu/cnse > > > > > --------------------------------------------------- > 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 -----------------------------------------------------