Mark my words; never the twain shall meet. When I had control (or at least thought I did), I would not allow the two processes in the same facility. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Johnson Sent: Friday, June 06, 2008 8:04 AM To: [log in to unmask] Subject: [TN] Changing conformal coating from silicone to urethane... We are considering changing our pcb conformal coating process from a silicone base material to a urethane base material. Other than a thorough cleaning of our machine, replacing material delivery lines, complete disassembly and cleaning of nozzles, ordering new nozzles to meet viscosity requirements of new material if necessary, are there other concerns we should be addressing? Mike *** The information in this e-mail is confidential and intended solely for the individual or entity to whom it is addressed. If you have received this e-mail in error please notify the sender by return e-mail delete this e-mail and refrain from any disclosure or action based on the information. *** --------------------------------------------------- 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 -----------------------------------------------------