Mike McMonagle: The sources listed by Ron are about the only ones historically available and his advice was/is good. Not that it will do you any good at this instant but the IPC and the Wire Harness Manufacturers Association (WHMA) are teaming to write a new document series (A-371X) that deals with "Acceptability Criteria" for all phases/aspect of wire/harness/cable assemblies. That document will include criteria for tinning and soldering stranded and solid conductors, but until it is published you might want to find old copies of the Military Standards that Ron referenced. Regards, Jim Moffitt, Electronics Training Advantage ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################