In a message dated 08/02/2003 0:50:34, [log in to unmask] writes: >By now I have seen quite a bit of ATC presentations for Lead Free and I am >a bit surprised that this is the first time I have read about a soak or >dwell time at each temperature extreme. Most have reported that they just >go up and then back down in temperature. 30minutes up and 30 minutes down, >thus 24 cycles a day across the range they have selected seems quite common. >Any comments?? >Have you also seen this type ATC procedure? Hi Dave, Yes, unfortunately I have seen them--and it's a pity. These data are worse than useless--they are misleading. But that comes from people doing things without understanding them, and from people being pushed to produce data fast--nevermind that they are meaningless --------------------------------------------------- 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 -----------------------------------------------------