[Elecraft] new solder

[Charles Harpole]

I have some of the new solder with the non-toxic flux and no lead.  I get what looks like cold joints regardless of the heat applied.... many tries, same result.  Anyone else get the same?  73Charles Harpolek4vud at hotmail.com > From: ojohns at metacosmos.org> Subject: Re: [Elecraft] K1 toroid winding> Date: Mon, 18 Feb 2008 13:54:28 -0800> To: bud73 at comcast.net> CC: Elecraft at mailman.qth.net> > Dear Bud,> > Winding the toroids is easy. Tinning the leads is hard, unless you > have a solder pot or some such. That's where the Toroid Guy > <toroidguy at earthlink.net> shines. His are beautifully tinned. Saves > you from potential bad solders onto the boards.> > Oliver Johns> W6ODJ> > > On 18 Feb 2008, at 12:38 AM, Dave Andrus wrote:> > > Bud:> >> > I've seen the advice, and it's all excellent, but for someone new > > to the art, it might still sound just a bit intimidating ("remember > > to do this, don't forget to do that"), so I'll offer my 2 cents > > just to try and make it a bit worse!> >> > Remember that it's only mysterious until you've actually wound your > > first toroid. After that, it's all mostly downhill (with the wind > > at your back, usually)!> >> > Remember that you're going to get a (typically) excellent manual > > from Elecraft that goes out of its way to show you pictures and > > give lots of good advice when you need it--at the moment you're > > winding the first toroid. I've done lots and lots of toroids, and > > I still was impressed with the graphics, winding instructions and > > lead dressing advice that's in the manual. So, don't be afraid to > > try--they're really not hard at all, just new to someone that's > > never done one before. In fact, one could say that they're no > > harder than winding any inductor, and in some ways quite a bit easier.> >> > If you try your first one, and you're still not sure if it's right, > > take a quickie digital picture of your finished toroid, and email > > it to either Elecraft's great tech support folks or here on the > > reflector (just don't send big attachements if you can avoid it). > > Then ask, "Hey, how does this one look?" Guaranteed you'll have > > lots of seasoned eyes looking over your shoulder.> >> > Don't be afraid to try. Oh, and did I forget to mention that I > > ordered my recent K2 toroid set from Mychael, the coil guy!? He's > > quick (had them in 3 days from across the country), not too > > expensive, and his toroids look great. Hey, I already know how to > > wind 'em. Don't need more practice ;-)> >> > It cut a couple of hours off of my build time.> >> > 73,> >> > Dave K7DAA> >> > http://www.k7daa.com> >> > On Feb 17, 2008, at 4:37 PM, John R. Lonigro wrote:> >> >> Bud:> >> Here's a little tip (I'll leave the poetry to Wayne): The first > >> winding tends to be the loosest, so wind N + 1 turns and then > >> remove the first one, ending up with the correct number. But make > >> sure you double check the number of turns. Being off by "only" 1 > >> turn may not sound bad, but in many cases it represents a big > >> increase in inductance, possibly over 10%. As others have said, > >> just count the number of times the wire passes through the center > >> of the toroid.> >>> >> I've easily wound well over 100 toroids in the past few years and > >> have never had a problem with winding them. Be especially careful > >> stripping the wire before soldering it into the circuit. You can > >> search the archives for various techniques. One thing I do in > >> that regard is insert the part BEFORE stripping the wire, to check > >> for proper fit. Then I trim it, leaving maybe 1/8" extra on each > >> lead. Finally I remove it and concentrate on stripping the wire > >> where I know it's going to be contacting the solder pad. If you > >> don't trim it first, you'll end up spending lots of time stripping > >> parts of the wire that will either be snipped off after soldering > >> or will be nowhere near the solder pad.> >>> >> 73's and good luck,> >>> >> John AA0VE> >> bud73 at comcast.net wrote:> >>> I just ordered a K1 four band transceiver.> >>> I am worried about the torroids .... should I be?> >>>> >>> Bud> >>>> >> _______________________________________________> >> Elecraft mailing list> >> Post to: Elecraft at mailman.qth.net> >> You must be a subscriber to post to the list.> >> Subscriber Info (Addr. 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