Ioan Tempea: Is the mask covering both bare laminate and Copper? Is there a difference in removal difficulty bare board vs. exposed Copper? If the exposed Copper is the big problem, I strongly suspect that treating bare Copper with a good anti-tarnish might extend strip time window. Rudy Sedlak RD Chemical Company --- On Fri, 5/23/08, Ioan Tempea <[log in to unmask]> wrote: > From: Ioan Tempea <[log in to unmask]> > Subject: [TN] Water soluble masking > To: [log in to unmask] > Date: Friday, May 23, 2008, 12:52 PM > Dear Technos, > > > > I am testing WS solder masking substances and what I see is > that they > wash perfectly if relatively fresh (barely cured or after a > couple of > hours on the board) and they wash very poorly if passed in > the in-line > machine 24 or 48 hours after the application. > > > > Is this natural? What is your experience? > > > > Chemtronics have a note on the bottle requesting washing > within 48 > hours, nothing marked on the Techspray bottle, but both are > very > difficult to remove after 24 hours. > > > > Thanks, > > > > Ioan > > > --------------------------------------------------- > 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 -----------------------------------------------------