VidPro
Flashlight Enthusiast
the magnet guy says the magnets "begin" to lose ther magnatizm when the temps go over 175*f , so when you soldered yours did you notice any changes?
Did you ever lose some of your magnatizm, when soldering magnets?
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alfreddajero
Flashlight Enthusiast
I sure did, it seems that magnets dont like heat at all.......I wanted to do this to charge single cells but after a few times with the neo magnets it just didnt work out for me. I tinned one side of the magnet and also the wire lead and for some reason it just didnt want to hold, im using Deans solder by the way since thats what i use for my RC's. I went to Radioshack and got some single cell holders from there.
VidPro
Flashlight Enthusiast
great thanks, that is what i needed to know.
wonder how i can pull it off then, i got slightly bigger ones, to get a really good grip, and to keep the heat off one end, but the bigger it is, the harder it is going to be to get solder flow on them untill they are hot.
at first i was ready to toss them up on the stove to solder them, i guess that would have been a huge misteak
i dont have a tab welder, how the heck does that guy who is selling them WITH wires soldered on doing it :shrug:
and 175* i never would have thought, why with my
"expert" 
soldering skills steam can roll off by the time i get done. that is like 210+.
wonder how i can pull it off then, i got slightly bigger ones, to get a really good grip, and to keep the heat off one end, but the bigger it is, the harder it is going to be to get solder flow on them untill they are hot.
at first i was ready to toss them up on the stove to solder them, i guess that would have been a huge misteak
i dont have a tab welder, how the heck does that guy who is selling them WITH wires soldered on doing it :shrug:
and 175* i never would have thought, why with my
"expert" soldering skills steam can roll off by the time i get done. that is like 210+.
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alfreddajero
Flashlight Enthusiast
Here's a pic of mine......i think i did a great job.....but i also must be using the wrong solder as well. Because when the charge completed and i pull on the wires the leads would just come off leaving the magnet on the battery terminals. I gave up going this route because i kept ruining the magnetism of the magnets, and a pack of 4 neo mags cost me 4 bones at wallyworld and i was using my second set of mags.
Sure, soldering temperatures make them lose their magnetism, but if you use a hot iron and be quick about it, they retain substantial magnetism, because the heat stays localized. And if you need more magnetism, stick a non-soldered magnet onto them after they cool -- you could even carefully (to preserve electrical contact) glue the second magnet, if you like.
Turbo Guy
Enlightened
Radical thought. Solder the leads to one side of a small steel washer. Place the magnet on the non soldered side and other side of magnet to cell.
Mr Happy
Flashlight Enthusiast
To avoid any resistance losses you can solder your wire to a small piece of copper foil, and then glue the magnet to the same side that you soldered. The magnet will then sandwich the copper foil between itself and the battery terminal so that no current has to flow through the magnet.
VidPro
Flashlight Enthusiast
my whole idea behind soldering it would be to have a rock solid connection at least in as many places as i can get it. before i got them i did see the Jewlerly ones, with the predrilled holes, i was wondering how i could possibly use them to get a solid connect, other than again soldering in the hole itself (where the jewlerly wire goes through)
so i guess the jewlerly has same issue no silver brazing for it either, just tie it off and pull it through the holes.
i kept thinking put wire in and Crimp it, yet no magnet is gonna crimp.
so i guess the jewlerly has same issue no silver brazing for it either, just tie it off and pull it through the holes.
i kept thinking put wire in and Crimp it, yet no magnet is gonna crimp.
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65535
Flashlight Enthusiast
No but the magnet didn't like it.
VidPro
Flashlight Enthusiast
i wasnt referring to you specifically , but now that your here , How the heck do you do that?
i know you have a secret electromagnet and after you get the wire attached, you run it through the electromagnet , and remagnatize it, tried there here once, the Gausser would only make fridge magnets
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alfreddajero
Flashlight Enthusiast
TX101 that is a good idea, i might have to give that a try.
Basic secrets are using quality magnets, prepping surfaces, proper flux, proper brand of solder, proper (high temp) soldering station, clean tip, experience.
VidPro
Flashlight Enthusiast
cool so you pulled it off without a Tab welder, that is good to know, , there is hope for me yet.
In this post I've shown how you don't need to solder the wire to the magnet itself but only to the silver contact.
Wulf
Wulf
VidPro
Flashlight Enthusiast
ohh that is good, magnet does the clamping, but the connect is still to the wire.
Kestrel
Flashaholic
Solder noob here, but I do know something about magnetic materials. Can't you just stick the magnet to another magnet (temporarily) prior to soldering? The magnetic domains shouldn't randomize upon heatup while the magnet is adjacent to another strong magnetic field. My two lumens,
You'd want a piece of ceramic or something (even cardboard, actually) between them, so the second magnet doesn't get hot, too. But yeah, that sounds like it should work. If you have a bad enough magnet for this (and if the contact magnet isn't already saturated), you might even get it stronger than it was.
Curie temperatures are good things to know. The Curie temp is the level at which the magnet isn't magnetic any longer and unless cooled in a magnetic environment the loss will be permanent.
When in doubt, how about using a conductive adhesive if the magnet needs to be used as part of a battery clip?
When in doubt, how about using a conductive adhesive if the magnet needs to be used as part of a battery clip?
