Hans: Contrary to popular belief polyester is resistant, with the exception of acids, to most chemicals including traditional "solvents". That's why there are still so many of those old polyester suits still around from the late 60's early 70's, you can't destroy the stuff. As I recall a solution of 25% sodium hydroxide will break it down, conc. propylene glycol may also work. You may want to try a little agitation and heat to speed it up. Good Luck! Michael Barmuta Staff Engineer Fluke Corp. Everett WA 425-446-6076 -----Original Message----- From: Hans Shin [mailto:[log in to unmask]] Sent: Friday, August 08, 2003 1:55 PM To: [log in to unmask] Subject: [TN] polyester Does anyone know what solvents I can use to dissolve polyester (e.g. polyethylene terepthalate, PET)? I tried acetone, and quite a few other solvents which should dissolve that stuff, but without any luck. We are not allowed to use acid. Hans Shin Pacific Testing Laboratories, Inc. www.pacifictesting.com --------------------------------------------------- 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 -----------------------------------------------------