Just a thought because this happened once to me, Are your parts hitting the nozzle on the wave and just popping them off. Bill Page <bill.page@SANMIN To: [log in to unmask] A-SCI.COM> cc: Sent by: TechNet Subject: [TN] This is a new one on me <[log in to unmask]> 01/22/03 10:09 AM Please respond to "TechNet E-Mail Forum."; Please respond to Bill Page Hey folks, I've been in this business for over 20 years, and thought I had seen it all, but this is a new one. We're having problems with our glue/wave solder process. Parts are falling off the board. "That's not new," you say? "Check your handling, stupid," you say? "Check your glue cure process, stupid," you say? Yep. Shear tests indicate that our glue process is working. We're using a product that is very widely used in the industry, following the manufacturer's recommended cure profile. And yet, parts fall off -- as they go through the wave solder machine. Adhesive stays put. Has a flat surface where the part used to be. Pads are beautifully soldered...just no parts there. And we have verified that the parts are present before the wave. Across chip suppliers and part numbers, across solder mask types, across PWB vendors. Is it just me? Is the business finally catching up with me? Should I give up and become a high school band director? Your suggestions are welcome! Bill Page Kenosha, WI --------------------------------------------------- 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 -----------------------------------------------------