60/40 vs. 63/37 Solder
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From: Michael A. Terrell on 18 Jul 2010 01:47 Jeff Liebermann wrote: > > On Fri, 16 Jul 2010 20:14:45 -0400, "Michael A. Terrell" > <mike.terrell(a)earthlink.net> wrote: > > >Jeff Liebermann wrote: > > >> I have some rolls of solder around the shop that are not well labeled > >> or identified. Rather than risk leaving corrosive flux on a board, I > >> prefer to clean most everything. > > > I just tossed solder like that into my solder pot. > > Right. Great idea. I did that once and regretted it. I tossed most > of a 1 lb roll of Ersin 362 (62/38) rosin core solder into the wire > lead tinning solder pot. The roll had gotten splattered with acid and > was leaking flux. The result was a large cloud of noxious smog, as > all the rosin simultaneously went up in smoke. You've seen the smoke > produced during soldering. Now multiply that by a few thousand times. > If it had set off the smoke alarm, I would have really been in > trouble. I don't know the correct way to recycle and remelt old > solder. Whatever it is, should probably be done outdoors. I would NEVER add a pound of solder to an existing solder pot at one time. When I bought my 6" diameter solder pot I had enough used solder to more than fill it. It came from the use of a smaller solder pot to salvage ICs from scrap PC boards. Float the board, then tap the corner of the solder pot. A bunch of solder balls hit the aluminum plate the pot was on. I would use a large pair of channel lock pliers to pick up the hot pot to pour out some solder into a small aluminum pan, then dump all the loose solder into the pot. Solder pots are required to have an exhaust fan, in industrial settings in my area. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.
From: Smitty Two on 18 Jul 2010 03:27 In article <i1t5jq$k2f$1(a)news.eternal-september.org>, "William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote: > "Smitty Two" <prestwhich(a)earthlink.net> wrote in message > news:prestwhich-D3E215.12482717072010(a)news.eternal-september.org... > > In article <i1sv01$oqv$1(a)news.eternal-september.org>, > > "William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote: > > >>>>> To compare apples to apples, I called my supplier yesterday for > >>>>> current pricing: 63/37, $13.80/lb. 60/40, $13.30/lb. I also asked > >>>>> how many people were buying 60/40, and she confirmed that > >>>>> well over 90% of customers use 63/37. > > >>>> Fascinating. It raises the question of why there is such a huge > >>>> difference in the pricing of Kester's solders. > > >>> If you're referring to widely different prices from different suppliers, > >>> it's the same with any product or service, of course. When the 99% > >>> isopropyl topic come up, I plugged it into google's "shopping" tab. > >>> Prices ranged from 2.79 to 14.50 for a pint of the stuff. > > >> That isn't what I meant. There's a 20% difference in the price between > >> Kester's 60/40 and 63/37 solders. > > > Oh, so you didn't read my post after all. To reiterate, 63/37 is 13.80, > > 60/40 is 13.30. That's uh, let's see, oh yeah, less than 4%. > > <GASP!> > > Yes, I DID read your post, and Yes, I did understand exactly what you said. > To wit... that there was almost no difference in the prices of the 60/40 and > 63/37 solders from your supplier. That's why I raised the question about why > there WAS such a large difference between Kester's solders. > > I think it was plain from what I wrote that I was wondering why there was > almost no difference in your supplier's prices for solders from (presumably) > the same manufacturer, while Kester solders had a 20% difference. (See > above.) Must /everything/ be explained in excruciating detail five times > over? > > This happens over and over and over and over and over and over and over and > over, and not just to me. It's because people don't read carefully, then > think about what they've read. Believe me, I sometimes am about to respond > to a post, then discover I'm mis-understood it. AH-SO! At last we're communicating. Yep, usenet is tough that way sometimes. Here's the missing piece: The solder I buy IS KESTER. The EXACT same stuff that you buy. Only two differences: The disparity in formulations is less, and the price is roughly half.
From: Smitty Two on 18 Jul 2010 03:29 In article <i1td8b$gv3$1(a)news.eternal-september.org>, "William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote: > I wasn't mislead. Given the differenc in price, it was obvious it wasn't > Kester. But it was, grasshopper. You paid too much, because you bought it from a hobby supplier.
From: William Sommerwerck on 18 Jul 2010 07:48 > AH-SO! At last we're communicating. Yep, usenet is tough that way > sometimes. Here's the missing piece: The solder I buy IS KESTER. The > EXACT same stuff that you buy. Only two differences: The disparity in > formulations is less, and the price is roughly half. Fascinating. Perhaps someone, somewhere will have an explanation.
From: William Sommerwerck on 18 Jul 2010 07:50
>> I wasn't mislead. Given the differenc in price, it was obvious >> it wasn't Kester. > But it was, grasshopper. You paid too much, because you > bought it from a hobby supplier. Actually, I bought the solder at least 20 years ago, and I believe it came from an electronics-supply store, not a "hobby supplier". I also paid less than $10. |