Tetrahydrofuran (stabilized) in a well ventilated area also works well to remove polyurethane conformal coatings after drying but before full cure. (1 to 5 days). Be careful with age and oxidation of THF or it can become explosive like ethers. For acrylics, the solvent used to thin the coating material (or just about any solvent) will do the trick. Ketones work best and longer chain ketones like MEK or methyl isobutyl ketone may be less agressive on the substrate or markings. They're also a little less volatile. -----Original Message----- From: Dehoyos, Ramon [mailto:[log in to unmask]] Sent: Friday, August 08, 2003 3:18 PM To: [log in to unmask] Subject: [TN] Acetone > Technetters: > Does anybody know if there is any papers that indicate that acetone > is detrimental to PWAs? It is very handy in the removal of CC of small > areas during rev changes, except someone raised that question. > Thanks for all input on this matter. > Regards, > Ramon --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------