Dan, I used a 5-zone oven for over a year with lead-free product with great success. However, my boards were not very thermally demanding. (5in. x 4in. x .063, 8 layers). When I went to a more complicated product I went to an 8 zone oven. It can be done but takes a little more work. Joel Mearig Delta Tau Data Systems, Inc. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Dan Mauro Sent: Thursday, November 10, 2005 7:44 AM To: [log in to unmask] Subject: [TN] Reflow (5 zone) Pb-free Folks, Who can shed some light on the expectations of using a 5 zone oven for lead free production? Thanks Dan Daniel Mauro Manufacturing Engineering Manager International Electronics, Inc. 427 Turnpike Street Canton, Ma. 02021 Ph: (781) 821-5566 Ext. 167 Fax: (781) 821-4443 Email: [log in to unmask] --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------