Steve, I saw this once many years ago with a UV cured LPI mask. The UV lamp was not working and the SM got only a thermal dry with no real cure. John Maxwell At 04:01 PM 1/13/2004 -0500, you wrote: >Hi All! > >You're probably wondering; "What the heck? Snake board?" That's what I call >it. > >Built this assembly (all PTH), waved it, and then washed it, went to get it >out of our cleaner, and all the solder mask is coming off in big slabs just >like a snake does when he sheds his skin! Go look at "Mask Peel, Mask Peel >2, & >Mask Peel 3" at: > >http://www.stevezeva.homestead.com > >I wash in a Electrovert MCS-1000 with Kyzen XJN, and the mask on the board >was a Dupont Vacrel dry film. Never have had a problem with Vacrel dry films. > >The mask doesn't look degraded, or damaged in any way...it's just not stuck >to the board! Anybody ever seen this happen before? Unfortunately, this was a >rather expensive assembly.....:^{ > >Nice way to start the year off, huh? > >-Steve Gregory- > >--------------------------------------------------- >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 >----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------