Tororids
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I'm having trouble tinning my toroid leads. In spite of rigorous cleaning they just don't want to accept solder ( Kester 44 ). Will adding some paste flux interfere with electrical qualities of the leads ? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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No it won't but not sure that is going to help you.
What method are you using to tin the leads? I as well as most others have had great success just burning the enamel off with solder and an iron. I keep a 40 watt iron hot and just keep feeding fresh solder to it with the winding lead on the iron. The enamel always melts and the impurities flow away. You need to get that coating removed 100%. Tell us a little more about your technique. Rich Kd0zv -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Al & Dianne Bruce Sent: Tuesday, March 06, 2007 6:46 AM To: [hidden email] Subject: [Elecraft] Tororids I'm having trouble tinning my toroid leads. In spite of rigorous cleaning they just don't want to accept solder ( Kester 44 ). Will adding some paste flux interfere with electrical qualities of the leads ? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Perhaps, I will run afoul with the list crowd, but from the get go on my
first Elecraft kit, a K1, S/N 02326 (finished 5 days ago), I could not get fond of burning the enamel off. I tried the fine sand paper route wrapping a 3 inch long X .5 in wide strip around a plastic drinking straw and securing with tape at just the ends of the wrap. That worked but was far too slow. So, I went back to the way I had done it as a kid and used a small sharp pen knife at 30 degree angle away from the toroid while rotating the wire. I found I had the best control using the pen knife, being able to start the stripping precisely where I wanted. I wore magnifying safety glasses and made no nicks that I could see. The K1 fired up perfectly the first time and has been running ever since (about a week). 22 countries and 17 states worked so far on solar power. Love this little radio. Jozef WB2MIC Wells VT Rich McCabe (IWH) wrote: > No it won't but not sure that is going to help you. > > What method are you using to tin the leads? > > I as well as most others have had great success just burning the enamel off > with solder and an iron. I keep a 40 watt iron hot and just keep feeding > fresh solder to it with the winding lead on the iron. The enamel always > melts and the impurities flow away. > > You need to get that coating removed 100%. > > Tell us a little more about your technique. > > Rich > Kd0zv > > > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Al & Dianne Bruce > Sent: Tuesday, March 06, 2007 6:46 AM > To: [hidden email] > Subject: [Elecraft] Tororids > > > I'm having trouble tinning my toroid leads. In spite > of rigorous cleaning they just don't want to accept > solder ( Kester 44 ). Will adding some paste flux > interfere with electrical qualities of the leads ? > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > > Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Al & Dianne Bruce
Al and/or Dianne,
If you have a Hakko-style soldering pump similar to the Model 808, its nozzle (ordinarily used for desoldering) makes a great way to heat and apply solder to the varnished leads to remove varnish and tin them quickly. Prior to using that technique (recently suggested on this reflector), I used a combination of candle or butane- lighter flame, fine-grit sandpaper and an occasional light coating of flux to get the job done to my satisfaction. Whatever method you adopt just be sure that the finished solder joints are completed with a proper "wet" look, and measure their resistance to the PCB board. Obviously, be sure to remove any residual traces of flux that may remain behind too. 73 Steve Banks K0PQ Sent via BlackBerry from T-Mobile -----Original Message----- From: "Al & Dianne Bruce" <[hidden email]> Date: Tue, 6 Mar 2007 07:46:13 To:<[hidden email]> Subject: [Elecraft] Tororids I'm having trouble tinning my toroid leads. In spite of rigorous cleaning they just don't want to accept solder ( Kester 44 ). Will adding some paste flux interfere with electrical qualities of the leads ? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Al & Dianne Bruce
Hi Al (or is it Dianne?)... no sig, can't tell... sorry!
>I'm having trouble tinning my toroid leads. In spite >of rigorous cleaning they just don't want to accept >solder ( Kester 44 ). Will adding some paste flux >interfere with electrical qualities of the leads ? Adding flux won't hurt... BUT, it won't help either!!! Chances are that it's HEAT you're lacking! 1) What are you using for your soldering device? 2) Is is controllable with regard to temperature? 3) How long are you applying the heat to the wire? 4) Are you starting at the CUT END of the wire, or at the middle of the wire? Here's the technique which I've used for years. It's seldom failed to yield satisfactory results: 1) MAKE CERTAIN THE WIRE YOU WANT TO TIN USES HEAT-STRIPPABLE ENAMEL (otherwise, you'll waste a LOT of time...) 2) Cut the wire to length 3) Set soldering iron to STUN (actually, 750-800 deg F) and allow it to come up to temp. 4) Set iron on desk so the FLAT of the tip is horizontal. 5) Melt a small blob of solder onto the flat side of the tip. 6) Insert the CLIPPED TIP(!) of the wire into the solder blob and leave it there for 3-4 seconds. If you really DO have heat- strippable enamel AND if the iron tip temp is adequate, the enamel should begin to bubble and smoke in 3-4 seconds (IF you stuck the CUT (bare copper) tip of the wire into the solder). 7) Once the enamel starts to bubble and smoke, apply a bit more solder to the tip and advance the wire thru the 'blob', until you've melted all of the enamel and left a coating of solder on the wire. 8) Reverse the process... slowly remove the wire be pulling it out of the blob in the same manner as when you inserted it. This should leave you with a nicely tinned lead, but possibly one with some 'dross' remaining on the lead. 'Dross' is the burnt enamel which can usually be pretty easily stripped off the lead by merely scraping a fingernail against it. It is IMPORTANT to insert the CLIPPED TIP of the wire into the solder blow, because you want the bare copper to be the first thing to contact the heat... bare copper conducts heat MUCH more quickly than trying to 'force' the heat thru a layer of enamel. Good luck, Tom Hammond N0SS _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Steve Banks
Hi Steve
My mail went begfre I read yours...! 73 Jacques F9OJ ----- Original Message ----- From: <[hidden email]> To: "Al & Dianne Bruce" <[hidden email]>; "Elecraft" <[hidden email]> Sent: Tuesday, March 06, 2007 1:51 PM Subject: Re: [Elecraft] Tororids > Al and/or Dianne, > > If you have a Hakko-style soldering pump similar to the Model 808, its nozzle (ordinarily used for desoldering) makes a great way to heat and apply solder to the varnished leads to remove varnish and tin them quickly. > > Prior to using that technique (recently suggested on this reflector), I used a combination of candle or butane- lighter flame, fine-grit sandpaper and an occasional light coating of flux to get the job done to my satisfaction. > > Whatever method you adopt just be sure that the finished solder joints are completed with a proper "wet" look, and measure their resistance to the PCB board. Obviously, be sure to remove any residual traces of flux that may remain behind too. > > 73 > Steve Banks > K0PQ > Sent via BlackBerry from T-Mobile > > -----Original Message----- > From: "Al & Dianne Bruce" <[hidden email]> > Date: Tue, 6 Mar 2007 07:46:13 > To:<[hidden email]> > Subject: [Elecraft] Tororids > > > I'm having trouble tinning my toroid leads. In spite > of rigorous cleaning they just don't want to accept > solder ( Kester 44 ). Will adding some paste flux > interfere with electrical qualities of the leads ? > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > ---------------------------------------------------------------------------- ---- > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 ---------------------------------------------------------------------------- ---- Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.18.0/689 - Release Date: 15/02/07 17:40 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Tom Hammond-3
I use the solder blob approach and one trick I found is that taking a couple
of swipes with a piece of fine grit sandpaper pinched around the wire really helps with making the solder blob approach go much faster. Like others mentioned: high heat and continuous feed of rosin core solder is necessary. A final pass with a clean iron and fresh solder makes for a nice clean shiny coat. I also hold the core on a piece of dowel or a chopstick to avoid burning my fingers. 73 jim ab3cv _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Al & Dianne Bruce
Sorry, I meant BEFORE, not "begfre"....
Jacques ----- Original Message ----- From: "f9oj.7" <[hidden email]> To: <[hidden email]>; "Al & Dianne Bruce" <[hidden email]>; "Elecraft" <[hidden email]> Sent: Tuesday, March 06, 2007 2:16 PM Subject: Re: [Elecraft] Tororids > Hi Steve > My mail went begfre I read yours...! > 73 > Jacques > F9OJ > ----- Original Message ----- > From: <[hidden email]> > To: "Al & Dianne Bruce" <[hidden email]>; "Elecraft" > <[hidden email]> > Sent: Tuesday, March 06, 2007 1:51 PM > Subject: Re: [Elecraft] Tororids > > > > Al and/or Dianne, > > > > If you have a Hakko-style soldering pump similar to the Model 808, its > nozzle (ordinarily used for desoldering) makes a great way to heat and > solder to the varnished leads to remove varnish and tin them quickly. > > > > Prior to using that technique (recently suggested on this reflector), I > used a combination of candle or butane- lighter flame, fine-grit sandpaper > and an occasional light coating of flux to get the job done to my > satisfaction. > > > > Whatever method you adopt just be sure that the finished solder joints are > completed with a proper "wet" look, and measure their resistance to the PCB > board. Obviously, be sure to remove any residual traces of flux that may > remain behind too. > > > > 73 > > Steve Banks > > K0PQ > > Sent via BlackBerry from T-Mobile > > > > -----Original Message----- > > From: "Al & Dianne Bruce" <[hidden email]> > > Date: Tue, 6 Mar 2007 07:46:13 > > To:<[hidden email]> > > Subject: [Elecraft] Tororids > > > > > > I'm having trouble tinning my toroid leads. In spite > > of rigorous cleaning they just don't want to accept > > solder ( Kester 44 ). Will adding some paste flux > > interfere with electrical qualities of the leads ? > > _______________________________________________ > > Elecraft mailing list > > Post to: [hidden email] > > 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 > > > > > -------------------------------------------------------------------------- > ---- > > > > _______________________________________________ > > Elecraft mailing list > > Post to: [hidden email] > > 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 > > > -------------------------------------------------------------------------- > ---- > > > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.5.432 / Virus Database: 268.18.0/689 - Release Date: 15/02/07 > 17:40 > _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Rich McCabe (IWH)
I recall at one time downloading a short video showing the solder
blob method of stripping enamel from wires. I found it to be quite helpful and believe it was from the Emtech web site, but can't locate the URL. Perhaps someone on the list has this bookmarked and can post it. Bob, N7XY On Mar 6, 2007, at 5:06 AM, Rich McCabe (IWH) wrote: > No it won't but not sure that is going to help you. > > What method are you using to tin the leads? > > I as well as most others have had great success just burning the > enamel off > with solder and an iron. I keep a 40 watt iron hot and just keep > feeding > fresh solder to it with the winding lead on the iron. The enamel > always > melts and the impurities flow away. > > You need to get that coating removed 100%. > > Tell us a little more about your technique. > > Rich > Kd0zv > > > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Al & Dianne > Bruce > Sent: Tuesday, March 06, 2007 6:46 AM > To: [hidden email] > Subject: [Elecraft] Tororids > > > I'm having trouble tinning my toroid leads. In spite > of rigorous cleaning they just don't want to accept > solder ( Kester 44 ). Will adding some paste flux > interfere with electrical qualities of the leads ? > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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