In a message dated 10/8/98 6:00:43 AM Pacific Daylight Time, [log in to unmask] writes: << Rod/Bill I concur with those numbers as a worst case. Actually 20% max (5 - 10% nom) can be pretty easily achieved with the correct thermal profiles and the correct paste selection. Boiling point of the paste volatiles plays a large part. Jim Kittel >> Hi Jim! Can I ask what's desireable? Lower boiling point temperatures? Also, does mesh size and/or percentage of metals in your paste play any role? Thanks! -Steve Gregory- ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################