Hello all, I do a lot of component and material sourcing, crossing, and spec'ing. Probably the area I struggle with the most is the materials, like epoxies for board repairs, or adhesives, or sealants, cleaners, etc etc,...I did electrical engineering, not chemical. Is there any good resource place to get a handle on when you want an acrylic versus an epoxy, or silicone, or ... basic properties, what environment they are needed for, etc. A specific sourcing question I have right now - for challenging board repairs we use specially trained operators in a rework cell that use a 2-part epoxy to repair FR4. One product has a track cut, that usually causes weave exposure, that happens on every board on the line to allow for different configurations, and they want a way to protect it adequately with a 1-part quick curing material without sending it to the rework cell. We've tried those conformal coat pens, and they can be washed right off the board. Any suggestions? Genny --------------------------------------------------- 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 -----------------------------------------------------