The American Welding Society www.aws.org has established the magic temperature of 700 ° C as the separation point. Below 700 ° C is soldering, 700 and above is brazing/welding. It's pretty hard to imagine a soldering tool/tip combination nearing 700 ° C. But I'll admit that I've used tungston tip resistive soldering tweezers with just a bit too much abandon and I've made solderable connector cups glow bright red. Well, I guess I kinda just wanted to see how hot the tweezers could get it. It's an easy way to turn a good connector into scrap. Jack Jack Crawford, IOM IPC Director Certification and Assembly Technology [log in to unmask] 847-597-2893 FAX 847-615-5693 3000 Lakeside Drive, Suite 309 S Bannockburn, IL, 60015 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Eric CHRISTISON Sent: Monday, October 13, 2008 2:50 AM To: [log in to unmask] Subject: Re: [TN] Need soldering advice ASAP No II - tangential question.. Interesting post Mike, At the risk of going a little off topic I've never quite understood the distinction between a solder and a braze. Is there a clear cut difference in the metallurgy of the different joints? Regards, --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 -----------------------------------------------------