You piqued my curiosity John. Since I'm still using spools of Kester solder that I bought many, many years ago I haven't kept current with the latest stuff.
Looking at their web site (www.kester.com) I see they have a non-rosin "organic" flux that apparently is designed for electronics (so it won't be acid!). I can see why they'd feature it being water-soluble if it isn't rosin. However, that stuff should not cause corrosion! They have a variety of "electronic" solder products, some rosin core and some not. And, of course, they make non-electronic solders that probably do have acid flux. I'd suggest contacting their Hq by phone or e-mail. They have contact info on the web site, and give them the spool info you have and ask them what's going on. I agree with Don's suggestions. If you approach it nicely but firmly that quite obviously something is very wrong with that solder and they discover it is a mis-marked roll or some other fault of theirs, you might get a new K2 out of them in the bargain. At the very least you can get some good info about how to stabilize it. Ron AC7AC -----Original Message----- From: John Bonk [mailto:[EMAIL PROTECTED] Sent: Saturday, May 14, 2005 2:42 PM To: 'Ron D'Eau Claire'; [email protected] Subject: RE: [Elecraft] Organic Rosin Core Solder Ron, I'll try to find the page I reference, but it definitely said water-soluble. I can see the residue on the board, and the DMM shows a path across the "gunk". The corrosion seems to be returning also; only 16 hours after the last brushing. John _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com

