Michael, I agree with the comments that it depends on the paste. I would add another option. You can extend the working life of printed paste by keeping the pasted PCB in a refrigerator, this slows the evaporation of volatiles. Again consult your paste vendor. I have held units overnight this way during prototyping and still had good re-flow, wouldn't go that long in production though. The best option would be changing to a past with a long working time. BTW will management let you spend some of the money saved on other equipment? Could soften the blow of compromising the ideal line set-up ;) Dan --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------