Separating large neodymium magnets
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- Опубликовано: 29 июл 2011
- This is another video in my series of videos on how to handle large neodymium magnets safely.
In this video I show you how to separate two large neodymium magnets without destroying yourself or the magnets.
The tool is not my invention but I did make it myself out of scrap wood. Other examples of this tool you can find on robgallagher and kjmagnetics channels here on RUclips. Here's a guide for building one: www.kjmagnetics.com/buildamag...
The combining procedure is my own trick.
Full music credit:
White by Kevin MacLeod is licensed under CC Attribution 3.0.
Direct Link: incompetech.com/music/royalty-....
ISRC: USUAN1100010
© 2006 Kevin MacLeod 
Наука
love how his voice is so calming and suttle with piano in the background and hes wearing a Ditch the bitch T-shirt..
Hehe, I see the mixed signals :D Thanks for watching.
Brainiac75 where do you this magnets and how much are they? pls reply
You can get neodymium magnets from many places. I recommend supermagnete.com and magnetportal.de if you live in Europe. magnet4less.com seems good for US shipping but I have no personal experience with them. A 70x20 mm N52 disc magnet is around €45, but start smaller. Here's my buyer's guide video: ruclips.net/video/ih-rg6VuJDc/видео.html
Anton gberg subtle*
Is this randomly in anyone else's recommended?
You're not the only one who's recommended with this.
Yea....
Yup. Wtf?
But I watched the whole thing. I don't know why.
@@mellowkoopa same tbh
Very, very cool. These magnets are incredibly difficult to separate safely
I should be studying for finals but here I am at 1 am watching this.
same xD
Naterdon you should probably drop out if you would rather watch RUclips videos
-,' RED ',- It's a joke compadre
omg same
Naterdon your comment cannot be anymore accurate
there was one of the simplest and the most fascinating things I've ever seen very very well done
Wow, neodymium terrify me, and even watching them safely handled like this had me on edge. I absolutely love magnets, but these things are intense. Good video!
Agree
Those things are scary as hell.
fabricator I can only imagine them accidentally getting too close within range of their magnetic fields in the house, and all the sudden I would hear loud trembling as the magnets race to connect to each other obliterating everything in their path.
@@whitneyhoustonstan2472 your dick
I dont want one any more
123rd like
Almost as difficult as separating my nephew from his iPhone.
+Bigbuddyandblue
Haha, that sounds like a really dangerous mission. Be careful with that :)
And thanks for watching.
Yeah you wouldn't want your fingers crushed ;)
+Bigbuddyandblue Have you tried using a bigger wedge?
xd
+mar504 he he ...
What if they weren't separated by a piece of wood? How would you detach them?
With a lot more force. I show it in another of my videos: ruclips.net/video/9Q8qqUsNf-U/видео.html
Thanks for watching!
J I bet you would use your grandmas leftover grease
move them at right angles to the line of attractive force is a start.
Haha, indeed!
"There are very few problems that cannot be solved through a suitable application of high explosives.
" - Dilbert
my channel Once they are attached they function as a bigger and stronger magnet so all that would do is make an even bigger, even harder to separate situation.
That is quite an ingenious solution !
For compact and safe storage in stead of having a lot of loose single magnets lying around (and possible flying at each other if I was inattentive for a brief second). The pros store them like this with a spacer inbetween. Works well for me too :)
Cool video. Just got into these neodymium magnets recently after destroying a few hard drives & discovering these little powerful marvels. Before I saw this vid, it became clear that sliding them in opposite directions to reduce to magnetic surface area was clearly the easiest way to separate them. I cannot even fathom the freaky power of the large magnets in your vid. This is fascinating stuff. Thanks for sharing.
Cool. I have one magnet embedded in the face of another. Your method, and LOTS more force might be the answer.
I almost lost fingers when the accident occurred. The large one was a big cute. Maybe three or four times the mass of yours. A monster, and obviously dangerous. I also had another one, a cube, with less mass than yours. 1/6 the mass of the big one, but still substantial. I WAS WARNED HOW HAZARDOUS THEY COULD BE. VIGOROUSLY ON THE COMPANY WEBSITE.
But I was sitting aft my desk at work examining the large magnet, with the smaller one a yard or so away, behind me on a table. Seemingly INSTANTLY, the smaller magnet flew off the table and embedded itself in the large one. It was so fast, it seemed like it materialized there. REALLY high velocity. CRACK!! And sparks, and people came out of their offices. My hands were shaking. Any part in the way would have been pulp. Horrifying! I thought the smaller one was plenty far away. I had a friend with me. This was years ago, and they are still together! I tell people about it, and they think they could get them apart. Not without a scheme like you have and maybe a way bigger lever arm or a car jack. I WAS LUCKY. BE CAREFUL WITH THESE THINGS GUYS. What a way to lose a hand. Motorcycle accident?!! No...a magnet accident. LOL
This is the process I have to go through when waking up.
Low tech genius. I could only marvel, and laugh at your superb handling of 2 dangerous tigers by the tail.
@spectrospirit :
Glad to help. That was the whole purpose of this video :o)
The magnets in this video are advertised at 270 kg each, which is measured on a machine that pulls really thick iron cylinders at top and bottom of the magnet away from each other. In real life I wouldn't trust them over 200 kg but that's still a lot of pull force!
I always get excited when one of my hard drives fails because I get to take it apart to get the neodymium magnets out :)
+brent56and1 where did you get the security bit to get them open?
Sometimes you can grip the screws with the tip of some pliers. If you cant do that you can try hamering a sharp screwdriver under one of the covers and pry it. They are just torx screws but they require a small bit that isn't included in normal torx sets.
+cbernier3
Amazon has sets of security bits for just a couple dollars, I think my set has 40 or 50 different bits.
+brent56and1 Better make the most of it while you can, since mechanical drives are starting to become obsolete!
brent56and1 such things tend to rather upset me
Why go to all this trouble when you can just call Magneto. He can separate the magnet with flick of his finger.
Lol
makes sense
Sounds ligit
Iron Man would be the WRONG person to call though......:^/
FEMA Region 9 tell a goth to pick them up.
@MikHartwell :
Glad to help! I haven't tried oil on the magnets. It could help a little I guess but I think the advantage would be too small to make up for the mess it could create. Most - if not all - of the oil would be squeezed out between these magnets. I would prefer a very thin spacer/washer inbetween of a relative soft material like wood or plastic. Metal will scratch the magnets badly when separating these magnets using the shown method. Good luck with your project.
@mrmagnetsarecool:
Yes. I made it from scrap wood from a furniture factory. Hard wood is optimum for endurance but it could be made with softer and cheaper woods.
I didn't bother to sand it for a nice finish but it works :)
Before you said the "BS tool" I thought it was called the "Bullshit tool"
+Girly Seattle Hipster~! 〈3 Same!
that was the point -_-
Yeah, it must be anyone's first thing in mind LOL
My ex is a BS Tool
XD
+Paulygon Ball stroker?
+Googar12 I'm sure you know what BS really means
Did you follow the instructions on his shirt ?
+Paulygon Big Splitter?
I checked out your Buyer's Guide which was very enlightening, and also the magnetics calculator. That's exactly what I was looking for, thanks!
I was surprised to see that the force needed to separate a magnet from steel is the same force needed to separate the magnet from another magnet of the same size.
I was expecting it to be twice as much as the 2 magnets because the FAQ stated that "two or more magnets stacked together will behave exactly like a single magnet of the combined size."
As woodworker & engineer, this makes me want to creat overly complex and attractive tools for all of your magnet experiments :P
Love the channel.
What if they connect with no wood in between? Like magnet on magnet? Are they inseparable?
Hi. I have a video where I test it: ruclips.net/video/9Q8qqUsNf-U/видео.html Thanks for watching!
What if you turn these magnets around, so that they push away from each other, how much weight can they carry? Would love to see a video of this. :D
The rule of thumb is: Two equal magnets will repel each other with a force equal to the maximum pull force of one of the magnets. With magnets of the shown size they should repel each other with a force of up to 250-270 kg.
I may test in a future video whether this rule of thumb holds up in reality. But I'll probably test with smaller magnets first, since the rig have to be very sturdy to max out the shown magnets! They will try to turn around to attract each other with a lot of torque on the rig :)
Brainiac75 Hehe, yea make a video about that. Would be cool to see. :D
DogFoot23 there's a reason they made a comments feature on RUclips. So you can comment on videos.
Thank you :)
Yes, the magnets in HDD are powerful neodymium but they can be managed by hand unlike the big ones in this video. Some of the older HDD's do have very big neo magnets though and they can be a very cheap source for the otherwise very expensive neodymium magnets.
Thanks for watching and commenting.
very good and fantastic experiment to do
What happens if they get stuck together without the wood inbetween?
The forces increase a lot. I show it in this video: ruclips.net/video/9Q8qqUsNf-U/видео.html
Thanks for watching!
Lucitfler HK Yes
asking the real question here...
I would love to see some stuff (sausages, fruits, nuts, whatever) get squished between those magnets =P
I actually would like to make such a video. But by letting these magnets fly against each other it is very likely that they would chip or even shatter. I'm not ready to ruin €100 / $130 worth of magnets yet. But who knows, maybe one day I will have enough magnets to sacrifice some of them :o)
brainiac75 dont make magnet against magnet..put a buffer on them like a piece of plywood on each (topped with a thin metal layer)..the squishing power will be almost the same.. =)
Or are magnets so fragile that they chip/shatter easy? My strongest magnet is a neodym the size of a 1 euro cent =P
Just buy your own Neodymium magnets and try these stuff. Their price is so affordable here plus.google.com/111154112257009752506/posts/SbpQQtGYNzd
I don't want anyone's nuts anywhere near those fuckers. No, not even the word "nut"!
According to the K&J Magnetics calculator it would take a force around 330 lb to have them lay flat on their repelling poles so they could easily 'levitate' me :)
Thanks for watching!
I love your videos! TY for making them!!
How about removing two strong rectangular bar magnets that are stuck together?
The shown splitter can also be used for bar magnets. Thanks for watching!
I'd never thought that magnes can be dangerous, but as I see they actually can...
Yes, at this size you need to worry about them biting pieces off your fingers, ripping nails of and even breaking finger bones - with my larger ones it may be a matter of amputation if something goes wrong.
tell that to a person with pacemaker
Le Klinch I've never heard of magnes
nothing is dangerous until it reaches a certain size
Really interesting stuff! How do you safely store and transport the magnets?
I build the splitter myself if that what's you're asking for. Quite an easy build.
these things scare the crap out of me
same I think it'll smash my finger
+Im Pink and Yellow 0
Thumbs up for Banggood.
can I ask where you bought them?
Sure, one from an eBayer and the one with print from magnetportal.de (European shipping).
Those magnets are cool!👍
Hey thanks Brainiac75.I also have large neodymium magnets and didn't know how to join and separate them safely.Your videos are amazing and very informative.The big neodymium magnets are super strong and can crush bones and therefore need special handling and storage.Your videos help me to take good care of these magnets.Thanks +1 subscriber.
Awesome - that's exactly why I made these videos :) Welcome aboard - more to come!
I have few the size of a coin. Those are quite safe to manipulate, but 6kg must be like 30-40 kg of force.
+King Théoden It's an honor to meet you!
I saw smaller magnets put over 300kg , depends on the scenario, I think
King Théoden Isn't force measured by Newton?
Yes, but also you can easily convert Newton to kgs
Aww why separate two magnets that are so strongly attracted to each other? ✨❤️⚡️❤️✨
Circle of life.
Because love is poison.
One of them is a negative influence
Rod Longman it's always the girl eh?
Sin2x there are girls interested in science, then there are 6 year old girls
Nice work.
The force is strong with this one...
can this separate legos too?
Sure, but it'll misshape the bricks :)
Man my tv would be ruined like ten feet away
Thak you! I generally don't transport them because I don't need to. But I store them in the boxes they were delievered in. Luckily the magnetic force drops fast with distance so the box doesn't have to be that big. You can see how I store my largest magnet in my video called 'How is a 6" neodymium magnet delievered?".
You're welcome :)
If you stack two magnets together they will behave very similar to a single magnet of the same size as the two smaller combined. That is: they have the same pull force if put on a steel plate as the single magnet. But taking them apart from each other is a different scenario.
It still is a little counterintuitive that taking two magnets from each other is the same pull force as taking one of the magnets of a mild steel plate. I guess it has to do with 'saturation'. [cont.].
What if they are ACTUALLY attached to each other?
Then it takes much more force to separate them. Demonstrated in another of my videos, where I discuss the pros and cons of a spacer: ruclips.net/video/9Q8qqUsNf-U/видео.html
thanks
What is the purpose of these magnetic ?
I didn't understand..
Being magnets
Powerful Energy!!!!
They are used in hospitals a lot
Thanks :)
Yes, these magnets don't have to be large before it is dangerous and even impossible to separate them by hand. At least they are less dangerous when stuck together instead of two loose magnets ;)
This is the most calm tutorial i've seen
"I call it my BS tool that of course means my big splitter tool"
anyone else expected My Bullshit tool
Yeah
That shirt though...
Yes, what a prick!
I just wanted to say thanks for this. Based on this I made my own splitter and video :D
Good work. Thank you.
These magnets are scary man 😅. What happens if they touch without the spacer wood in the middle?
Magnetic shrapnel chips off of both in every direction
Spacer helps the magnets to be separated from each other and therefore easier to separate them in the future.Plus,it prevents the magnets from chipping as neodymium magnets are brittle.
he did a video about it: ruclips.net/video/9Q8qqUsNf-U/видео.html
i thought bs meant bull shit
nothings cool it does
0:30 sec, love the shirt. Awesome videos Brian ! Keep up the good stuff. Cheers from Belgium ;)
In this size they are not really toys any more although they can be fun to play with :)
Thanks for watching and commenting.
is there any youtuber that does dangerous shit with the magnets?
DogFoot23 I *heard* Rikki Poynter is a good *shout* check her out
I don't understand, why is it important to have a spacer between the two magnets? Why do you need that wooden thing to combine them?
+Jorge Andrés The spacer makes it easier to separate them. You have to put them together slowly or they will attract too fast and shatter. I have had that happen to small neodymium magnets.
+Jorge Andrés
I explain the advantages of a spacer in this video: ruclips.net/video/9Q8qqUsNf-U/видео.html
Thanks for watching and commenting!
+Jorge Andrés Otherwise it would be very difficult to separate them.
if you have magnet contact it becomes much more difficult to separate
I don't know what do you consider a "small" magnet but holy shit, you must work with some big stuff
So beautifully done - danish craftsanship :)
[continued]. The magnets are saturated so the two magnets combining can't find any more magnetic attraction than a single magnet put on a steel plate with lot of unsaturated material. Also the magnets have exactly the same surface area in the scenario where the steel plate is larger so the magnet in the steel/magnet scenario has more material to act upon and saturate.
Yeah, nice shirt! 0_o
Thanks. A good advice in some cases ;)
LMFAO!
+Brainiac75 Same
im drunk
Cheers!
Fantastic !!
As a tool maker.... Damm impressive!
"and place it far away"
i place mine in china and i live in california
Mesmerizing.
I did not see such big magnets yet, so I am curious.
If you would hold upper magnet, then how many kilograms you would need to put to lower magnet to separate them?
Excellent! Just what I was looking for. I especially liked your advice about using gloves. Have you ever tried some oil on the magnet surfaces if you know you'll need to separate them later? (I need my two 120kg magnets to touch each other, or with a washer between them).
With that size I would seriously consider a small version of the shown splitter to easily and safely take them apart.
With some effort you may be able to pry them apart on the edge of a table (with one of the magnets sticking out over the edge and push down on it) but they could end up flying back together if you're not careful and give you blood blisters/eat a piece of your finger flesh.
Once neo magnets are measured in inches you have to be careful or have a high tolerance to pain ;)
@anonysquirrel :
Yes, this splitter tool is large enough to split them without a spacer. It takes much more effort and is quite scary because the forces involved with the magnets being much closer in the whole proces are so much larger.
I don't recommend it. It is more dangerous and the magnets I did it with got scratched in the protective layer. I may make a video where I split two magnets with and without a spacer to show the difference if people insists?
No, they are not toxic but you shouldn't grind them up and eat them ;)
Their danger is mostly in the very high magnetic power that can - in this size - crush the bones in your fingers if eg. caught between two magnets flying against each other.
The nickel coating on them could also cause nickel allergy but that would require a (very) prolonged contact with your skin.
Thanks for watching!
Very clever! Did you come up with those tricks?
Hi,
Thank you for your very informative videos.
I will be buying 2 small magnets that are rated at needing 22kg to remove the magnet from industry-standard 3mm thick mild steel.
I wonder if you would know the following...
Is there a way to calculate how many kgs to remove the magnet from an equivalent magnet at different distances, assuming that they are not slid off?
Thanks!
Marco
If they are stuck together on opposite poles it should take around 330 lbs to pull them directly apart according to KJ Magnetics calculator. Not easy... Luckily they are much easier to slide apart as I show in this video.
Thank you!
Sehr gut. Danke
You are clever Sir!
Love your silent music in background.
That makes real sense, and it is proven when you compare the pulling force to a steel plate of two equal grade cylindrical magnets of the same diameter but different thicknesses, as they are virtually the same.
The pulling force between 2 similar magnets is roughly twice as strong.
awesome 👏
@brainiac75 Looks great, I recently built one out of hard wood designed to handle large magnets. I kept your design in mind during construction. I have seen other splitter tools on RUclips that look insufficient to fully protect you and don't seem to take into account the fact that the magnet will flip to correct itself when the magnetic fields collide. These large magnets are no joke, no point in taking unnecessary risks.
good quality video
fantastic shirt...was wondering how ya got em apart
RUclips algorithm is amazing
That could be really dangerous. I would never be able to hold them back by hand - especially since I don't want my fingers wrapped around the magnet on the sides facing each other (pinching/crushing danger). And if these magnets fly together they will most likely chip/shatter which could send sharp pieces flying into my eyes or body. I put them safely together in the video 'Combining two large neodymium magnets including spacer'.
Thanks for watching and commenting.
That is so cool
,@Walkingdeadman1991 :
'Normal' neodymium magnets like the ones from magnetportal shouldn't be used above 80°C (176°F). You can buy special neodymium magnets for higher temperature applications. They can be recognized by extra letter behind the grade - like N45M or N45SH. The highest I have seen is N33AH which can withstand 220°C (428°F) but it is only strength grade N33 (probably due to a lot of additives that ensure high temperature resistance but thins the neodymium-iron-boron composition).
My 6"x2" disc magnet is rated at around 1200 kg but the magnets in this video are much smaller and 'only' rated at max 270 kg each. Still very powerful and you definitely don't want your hand between the of the magnets in this video ;)
Thanks for watching!
@Rousland1 :
It's called 'White' by Kevin MacLeod and available for free and royalty free at incompetech. C()M
Love your cloth
That’s so cool
have you ever measured the PSI or Kg.cm Force between the two magnets? how much pressure they generate?
@yyhaoyue:
Thank you for your concern but no :)
I saw the video where a guy lost a nail and fingertip with neodymium magnets before I bought a big magnet myself. I'm fully aware of the risks.
that's awesome. I don't think people can even begin to understand the energy in those magnets.
Brainiac: Calm and chill
His shirt: dItCh tHe bITcH
These magnets are 70 mm diameter and 20 mm height. I'm from Denmark but ordered these magnets in Germany :)