Hard Drive Actuator Motor Magnets

It is primitive life, If you cannot find these magnets in life

As a magnet manufacturer, we know that magnet is a very big market. it was used in lots of different product. But as an individual, people will confuse that it looks very far away from us. Because we don’t use any magnet in our life.

But it is wrong. In fact, the magnet is everywhere in our life. So, let us introduce you some magnet in our life. And you haven’t known that before. If you told us, these magnets really do not in your lift, we will surprise. Because you are in the primitive life.

  1. Computer—hard disk driver.

Today, in the modem world, we use the computer every day. No matter buys something online, check some information, or chat with a friend, or send email, the computer is a good friend to us. But maybe you are confused about that, where is the magnet. In fact, lots of magnet in the computer. And the most important one is the HDD, the hard disk driver. There one rare earth magnet in the HDD, and very important. AND That’s why we say, if we take strong neodymium magnets near the HDD, will destroy it easily. But it will be fine if you take a magnet near the SSD. Because SSD does not have a magnet inside.

  1. Mobile Phone

Mobile phone just like our ID card, no matter where we go, she will stand with us. And we can say that it is one part of our body. And where is the magnet? The answer is the speaker. The magnet helps to transform the electrical signal into acoustic signals. And that is very tiny, most of the time it is 1mm neodymium magnet. That is what we call sound. Hard to imagine that mobile phone without a magnet, without them means without sound. How can we use a phone which was sound?

  1. Car

About the car, we would not talk about the speaker. Because we have mentioned it. But even we do not talk about the speaker magnet, there still lots of magnets there. Likes wiper motor, starter motor, electric seat motor, compressor electromagnetic coupler, air conditioner fan motor, automatic sunshade motor, steering angle sensor (magnetic sense) headlight steering mechanism (motor), auxiliary driving position automatic storage The box (motor) also has various sensors, such as: speed sensor, wheel speed sensor. There is also a magnet on the oil drain plug of the engine and the transmission oil sump to adsorb iron scrap. The magnet will be very different. From NdFeB magnet, sintered ferrite magnet, AlNiCo magnet, samarium cobalt magnets. With bout them, the car just is metal.

  1. Refrigerator

Maybe lots of people were found where the magnet is in the refrigerator. Yes, it is hidden in the door. In order to make sure the cold air stays in the refrigerator, Engineer put the magnet inside the door, so when we close the door, the magnet will attract the refrigerator tightly. But when we want to open it still very easy.

  1. Air Conditioning

Air-conditioning compressors (inverter) will use magnets, fans, swing fans, cooling fan motors will use the magnet, the use of permanent magnet motor will have a better energy-saving effect. Filter covers for air conditioners are generally also magnetized for easy removal.

  1. Microwave Magnets

Microwaves use magnetrons consisting of magnets to generate electromagnetic waves. And the electromagnetic waves used to heat the food. So that

There is lots of product have a magnet, but it is hard to name it. handbags and jewelry, cloth. If you find any the magnets used in your home? Let us know if you find any places that we didn’t include in our list.

Neodymium Arc Magnet Draft

6 Tips Should Note In Neodymium Arc Magnet Purchasing

Purchasing neodymium arc magnet should be more careful than the block magnet or the disc magnet. Because they very special, and too many factors need to confirm. In another word, the arc magnet is the custom product. No manufacturer will produce them in advance and waiting for your purchasing. If you are careless, it is very easy to lost money and waste time. So lots of customers ask Osenc Magnet Company to write some post, likes the topic about what factors should be noted in the neodymium arc magnet purchasing. So now, we would like to about this topic.

So let us introduce you the 5 Tips should be noted.

  1. Preparation period Should be Long

If you want to purchase the arc magnet, you should start this work as soon as possible. Because you will need a sample before you place the order. So we can calculate the time. In normal, the factory needs 14 days to 18 days to produce the sample. (If you want the high-grade magnet, factory need check the material in the market.) And then factory send the sample to you, it takes extra 4-6days. And you need 1 or 2 days to check the quality. And then pay them and ask the start their work. (It will take 3-5 days, as you know TT takes 2 or 3 days. The factory will do nothing before they get the deposit. If you or the factory makes anything wrong in the payment information, it will take extra 7-9days. ) Factory start they work when they got the deposit. The Mass production will take 18-21days.

So how many days do we need? Is there anyone have any idea?

If I am right,and everything goes well, no any mistake, the leading time of the Neodymium arc magnet is 40 days. If there anything goes wrong,60 days is possible. But as you know, God will not let everything goes well. Lots of things might happen. So 40 days must be not enough. Make the preparation period long enough will good for your work.

  1. Draft is important

Even you have enough preparation period, but you still save the time. And push the project finish as soon as possible. The secret is the draft. Make sure the information was written in the Draft. And what information must be shown?

Arc Degree, Arc Length, Height, Width, Thickness Inner Diameter, Outer Diameter, Plating, Grade, Tolerance

For example, the like this draft, it shows all information:

Neodymium Arc Magnet Draft

The arc degree: 55 degrees,

The length: 27mm(by the way, all of the drafts we use mm, not the cm)

Height: 6mm

Width: 3±0.05

Thickness : 2.2±0.05

Inner Diameter: 26.2mm

Outer Diameter:29.2mm

Plating: Ni

Grade N50M ( It means the magnet will be working well if the temperature under 100 Celsius degree. If you are not sure what grade to you need, you can tell the factory the operating temperature range. But please make sure the temperature you mark is Celsius Degree, not Fahrenheit Degree. Because Chinese magnet manufacturer use Celsius Degree.)

  1. Tolerance

As you see the width is 3±0.05mm and thickness is 2.2±0.05mm. But what does the “±” mean?

That is the logo of tolerance. So if the width is 3.05mm or 2.95mm are acceptable. If your product is high technology, your tolerance must be smaller. And in this business, tolerance is different. Different shape, different tolerance. Like the disc magnet, the standard tolerance is ±0.05mm, but the square magnet, the length, and width are ±0.1mm, and thickness is ±0.05mm. And if you have special requirement, the disc tolerance can be 0.02mm, and the square, the length and width can be ±0.05mm, thickness ±0.03mm. As we know some manufacturer in the west, the tolerance can be ±0.01mm.

But as the tolerance is smaller, the cost will be higher. For most of the people, the standard tolerance will meet their requirement.

 

  1. Temperature

About the draft, as we saw that, there no temperature was written. But all of us know that the magnet can be working well if the operating temperature below 100 Degree. Because the grade was N50M. M means the magnet working well if the temperature is 100 Celsius or smaller than 100 Celsius. About the relationship of temperature and grade, you can check below form

GradeNN*MN*HN*SHN*UHN*EHN*AH
Temperature80100120150180200230

*means the number, likes N*M, can be N35M, N38M, N40M, N42M, N45M, N48M, N50M, N52M. More information, you can visit the Neodymium magnet grade

  1. The quantity of S, N Pole

It looks like a very foolish question. But unfortunate, it always happens. Most of the time that happens when one of them (the seller and the buyer) is an apprentice. And the magnets are used for rotating equipment. The quantity of magnet should be plural. Like 12, 24, 26. Because the same magnetic field always pushes away something with a similar magnetic field. And the two different magnetic field will attract each other.S N pole acr magnet

 

So if you told to the seller the quantity, you should make sure that they understand what you mean.

magnetization Direction             magnetization Direction and ID OD

Likes that “we want 2400 pcs magnet, and here is the draft.(You just sent the seller picture A)and we use the magnet for rotating equipment ”. So are you mean you want 2400 pcs magnet, All of them are A magnet, and no B magnet? Or you mean you want 2400 set magnet. A magnet 2400pcs ,and B magnet 2400 pcs? If seller and buyer, both of them are new in this business. 2400pcs A magnet will be produced. But 2400 pcs are worthless if there no 2400 pcs B magnet.

 

  1. Magnetization Direction

Magnetization direction is a very important factor. If you make it wrong the magnets are worthless too. But As the arc is special shape, so there 4 type magnetization direction: diametrical direction, the width direction, thickness direction.

Different magnetization direction makes different direction has big power. So we should pay attention to that.

All factory we are talking about is very important. It helps us save time and save money. So we should remind the engineer and supplier to recheck the information are correct.

 

 

Neo Rare Earth Magnet with Ts 16949 ISO 9001

RARE Earth Magnets

If we pay attention, it will be very easy to found many rare earth magnets in our daily life. It is a very common feature in household appliances. These magnets are permanent magnets, and it sounds like fancy for many people. But do you have any idea about what it is different from other type magnets? So let s talk about the history of rare earth magnet.

History of Rare Earth Magnets

In last century, Rare earth magnets were developed by the scientists who at the United States Air Force Materials Laboratory. They found an alloy had the largest magnetic anisotropy. And they name the alloy “rare earth magnets”. Even the name insinuates that these magnets are sparse and hard to find. But in fact, they’re actually as abundant as iron or Gold. However, the main source is all come from China. They have good quality and big quantity material. And the point is most of them are high classify and cannot found in other countries.

How to produce Rare Earth Magnets

Once the raw material is sent to the manufacturer, it will be ground into powder. And then it will be mixed with other material to produce the magnet. And the different content of the raw material and other material, it will take the grade and the magnetic properties different. The powder will be pressed into a form (in normal, the form is the rectangle, Square or Circular) and then aligned using a big electromagnet. After the particles are aligned, the material is sintered to lock everything in place. In future, the material is a further process and cut down into smaller pieces. Once the final shape has been confirmed, the magnets will need a protect. And about the protect, it could be coated or plated. And they can protect the magnet from corrosion. At last, the magnets will be magnetized. Likes the normal magnet we use.

How to makes the rare magnet better
As the rare magnet is produced with different powder, different alloys. So their quality and strength are different from other magnets. In this business, BHMax is used for measured the magnetic fields. For example, the ceramic magnets (it is high strength in magnets) have a BHMax of 3.5, the strongest rare earth magnets have a strength of 40. And the Ferrite Magnet will be lower.

If the temperatures are too high, the magnets will demagnetize. And we call the temperatures Tcurie value. And different material magnet has a different Tcurie temperature. In normal, the ceramic magnet is 460 degrees Celsius(860 Fahrenheit).
And rare earth magnets is closer to 750 degrees Celsius (1382 Fahrenheit). So it means that rare earth magnets stand much higher temperatures before demagnetized.

No matter ceramic or SmCo magnets, both of them are rare earth magnet, are much more able to against corrosion. And neodymium magnets are rare earth magnet too, but it is rather brittle. And about the manufacture, neodymium is very difficult to produce. In a word, rare earth magnets are not a magical product. So what we should do is know more about them.

neodymium magnets purchasing

5 Factors To Help You Purchase Good Magnet

Lots of customers have no idea what magnet they want to buy. Maybe just their engineer told them the size and the quantity. And then they do their best to find the supplier or manufacturer. But it takes time if you have no experience with the magnet purchasing or buy the one which not you want. So in this post, we would like to show you how to be an experienced magnet purchaser.

At first, would like to remind you that, the magnet we talk about is NdFeB magnet.

  1. 3*5 and 5*3, not the same one

Make sure the measure. Maybe some people think that, are you kidding me? How can I buy a magnet without a size? But lots of time people will make mistake in the measure. And most of the time is the disk (cylinder) magnet. In normal, we talk about the 3*5 magnet, it means that the diameter is 3mm and the height is 5. So when we are purchasing the magnet we should be more careful about that. In order to make sure the measure, we will have double check with the customer. When they tell us the size 3*5mm, we ask them back “ are you mean the diameter is 3mm, and the height is 5mm?”

 

  1. CM and MM

It not easy to make mistake. But sometimes it happens. Engineer want 3*3cm, and then buyer told the supplier “pls send us 3*3 magnet sample”. And then mistake happen. Because in this business, the unit we use is mm. As you know Some seller will be careless, so they will send you what ask for. And will not ask you what you use for or what you really want.

  1. High-grade magnet not easy on stock

As we know, the magnet has different size, different shape, different grade. So, it is hard to stock them. Because the cost of the magnet is high, and if the grade, size, and shape do not match customer’s necessary, it will be valueless.  So if you want to buy N52, N50 or N48 magnet with big quantity and the seller said they have them on the stock. You should be careful. Because lots of sellers will use the low-grade magnet to instead the high grade.

Zinc Nickel magnet different

  1. Galvanized or Nickel Plating

Lots of people have a question with that, what is different with them? In one word, Nickel plating has better performance than Zinc plating, but zinc plating magnet has a nice price. So you can choose which one will suit for your requirement. ( Nickel is lighter in appearance because it is superior to zinc in terms of polishability. The treatment of the nickel surface also increases the temperature resistance, plus the conductive nature of nickel itself.)

  1. Sample is necessary

We suggest people buy some magnet in the local market. And test it, if the magnet see your requirement. And then send to your supplier. And they will test the sample to check what grade it is and what plating.  Sometime, you will found that the grade you think are not the real grade of the magnet.

 

magnet attach the key

What Can Magnet Use for In Daily Life?

In our life, we can find the magnet everywhere. But lots of time we throw it. And think that s worthless. Today we would like to show you some useful function about the neodymium magnet. And If you have any question or want to know more tips welcome to contact us. As we are magnet manufacturer wholesaler, so we know lots tips about that. And pls know the magnet we talk about in this post is neodymium magnet, not the  Alnico magnet nor sintered ferrite magnet.

1. Make the screwdriver attach the screw. We will found that the screwdriver can be easy attaching the screw. She will attract metal to her and self-tapping screws will stick to it. And that is not easy to drop. So you no need to worry about the screw will drop.
2. Organize the wires on your desk. You will need a spring from the patriotic pen which must be wound at the base of the cable. And using hot melt adhesive glue small magnets to the table and then you will get a pretty convenient option of fixing the wires at work.

3. Take a magnet and the size, look like a coin and throw on the pocket. And you will found that it is comfortable to keep nails to yourself and even more convenient to get them. (But don’t do that if you use Heart pacemaker, because that s dangerous) Same with the hammer, so that is very useful.

4. By gluing the magnets on a vertical surface you can mount various items there That’s how the tools are located on  balcony. pack with magnet magnet with screwdriver attach the key organize by magnet screwer with magnet magnet on kitchen

The kitchen also has an application of magnets Jars with metal covers can take place under the shelf, tin box on the side of the bedside table. Even in the refrigerator, you can arrange a place for drinks! How unpleasant moments when you scatter a metal trifle on the floor (Press the magnet more closely to the bottom of the box and with the help of unprecedented magic, make the glands come back to their place.)

5. By the way, in no case do not lean the magnets to the meters. Because the magnet will stop the meters. If you do that, the water company or electricity company will ask their lower to have a chat with you.

6. When your Mom bought chips! You ate a little and you no longer to eat all of them. Fold the edge of the package as shown in the picture. Pack it with the help of two magnets, and the chips are not going anywhere!

7. Do your keys have no permanent place? A small improvement of the light switch will solve this problem. At first, gently remove the light switch and its outer shell. To the inside, glue A magnet in.  So that he would be in the lower part of it. And then fit everything in place. In the end,  when we come back home, we will know exactly where to leave the keys. And it will not take any cost or too much time.

Magnet Stop Water Meter

In the last post, we talked about “magnet fishing”, and explain why that is a treasure hunter game, and how to help people to find the lost money. (In fact, we like to say creat wealth.) So in this post, we talk about something save money.

All of us know lots of ways to save money. Someone told us they will use the neodymium magnets to stop the Electric meter or water meter, even that is illegal. So here is the question, does this method really working?

let s check it

1. Does it illegals if we sell such magnets?

The sale and advertising of neodymium magnets will not take any criminally punish. It’s not drugs, so the Internet is full of websites where they are advertised, and sold. Some time there someone explains you which magnet is suitable for which water meter or electric meter. Sometimes such sites will be closed. But by the data of the Internet, the most actively selling, buying and using the neodymium magnets is the regions of Russia and Ukraine. many information about how to use the neodymium magnets from these regions.

 

magnet stop water meter

2. Neodymium magnet – is it not the same as usual?
Everyone knows the usual magnet – ferrite, that is, it is made of iron. But is not iron, just like a stone. There are also some magnets what the main material is cobalt or nickel. Neodymium magnets are approximately one-third of the rare-earth metal of neodymium, slightly less than two-thirds are iron, and about 2% are boron. In small quantities, other elements can be added. Powders of these metals are baked in forms, but the resulting mass is quite fragile and, moreover, is susceptible to corrosion, therefore, nickel, zinc or copper-nickel coatings, sometimes with the addition of gold, are used to protect it. In order for such a product to become a powerful magnet, it is subjected to a special electromagnetic influence at the final stage of manufacturing.

3. Where do they get it?
The main supplier country of neodymium magnets in the world is China. There are the largest deposits of rare-earth metals, and neodymium is rare-earth metal. There are also factories for the production of neodymium magnets, so most of them are wrestlers with counters in popular Chinese online stores. we must say, the scale of trade is impressive.
The booming trade in neodymium magnets is also in some countries’ online stores. The prices there are higher, but the buyer is advised on which counter to put a magnet.

big magnet from China

4. Are neodymium magnets the most-most powerful? And expensive?
Of all the magnets that are currently produced, neodymium – really the most powerful. There are many classes of neodymium magnets, depending on the temperature resistance. And the main disadvantage of a neodymium magnet is that at a temperature of 80 degrees Celsius, it begins to lose its magnetic function. The most powerful neodymium magnet is a magnet of class N52 with a temperature of the application up to 80 degrees. At temperatures above 100 degrees, neodymium magnets begin to lose his strength, and the higher the temperature, the greater. In neodymium magnets, the magnetic properties persist at a maximum of 199 degrees, and in samarium-cobalt magnets, up to 299 degrees.
The price of a magnet is determined by the price of neodymium, it is approximately $ 81-99 per kilogram. The disk neodymium magnet of 52×32 mm size costs on the same Chinese site about 1100 rubles. By the way, samarium-cobalt magnets are about three times more expensive.

5. And what factor stop what counters?
With the help of neodymium magnets, it is possible to stop water meters, electric and even gas meters. Counters differ in the principle of operation, design and degree of protection against extraneous interference. Thus, water meters according to the principle of operation are divided into tachometric, which can be wet and dry, and ultrasonic. Of these, only dry ones can be stopped by a magnet. And for someone who decided to fight communal accounts in such an illegal way, we have bad news: the counters of this group – more than 90% of all water meters installed in the apartments. And there will not be a fast transition to another type.
Electric meters are induction and electronic. At the same time, electronic devices are made with both a mechanical counting mechanism and a liquid crystal display. In turn, counters with a liquid crystal display can be with or without a transformer coil. And only this last kind of neodymium magnets is beyond control. The rest can be stopped, only the power of the magnets and the location of their installation will be different. As digital electronic counters are becoming more popular, the applicability of neodymium magnets to steal electricity is decreasing, but the pace, says frankly, is not high.
As for gas meters, most neodymium magnets do not work for most of today’s models. But there are those that can still be stopped. To do this, use the most powerful neodymium magnets with a clutch force of more than 200 kg.j

What is gauss in magnet business

What is gauss in magnet business

In this business, we often hear about Magnet Gauss, but we have a question now, what is Gauss? How much can Gauss be achieved with magnetism? How do we know how much Gauss does the magnet have? How much can Gauss be used for the commonly used N35 and N38? In this post, we would like to explain it to you, one by one in an easy way:

1. What is Gaussian
Gauss is a unit of magnetic field. 5000 Gauss represents your magnet with a maximum magnetic field of 5,000 Gauss.
2. How much can Gauss be achieved by magnetism?
This question is very general, and we do n’t know how to answer it and make you satisfied. Because the magnet’s magnetic level is related to many factors, such as the grade of magnets, the specifications of the magnet, the thickness and so on.
But we have collected some common specifications of magnet Gauss for your reference
Such as 10 * 4 N35 Gaussian material can reach about 3000-3200 Gauss, 10 * 5 to about 3400-3600 Gauss.
The surface magnetic field of a single NdFeB magnet is 3000-5000G, ferrite 300-800G, samarium cobalt, and AlNiCo 2000G. Neodymium iron boron should be considered as a very high permanent magnet, but it is difficult to reach 5000 or more.
3. How many Gaussian magnets are the largest?
N35, N38 is probably up to 2000GS. If the size is bigger, N35 can reach 3500GS at most, N38 can reach 3800GS. If there anyone tells you that he/she has a magnet above 10,000 gausses, you must marry him first, because he has new technology.
In general, the Gaussian surface of the magnet is such that it is inversely proportional to the area and is proportional to the thickness.
4. How do you know how big a Gaussian magnet is?
We usually use a Gauss meter to measure the Gaussian magnet surface. However, the Gaussian values measured at different positions on the surface of the magnet are different, and the Gaussmeters have different measured data, and the error is relatively large.
5. What is the difference between a Gaussian magnet and a magnetic flux?
Both Gaussian and flux measurements are made to determine the performance of the magnet. The reproducibility of magnetic flux is better than Gaussian, more stable, and the error is not too big.
Note: Gaussian (Gs) is the unit of measure for magnetic field lines. 1T=10000 Gs

What Adhesives use for Magnet

There are lots of magnet in the market, but how to work with the different types of magnets? Like the neodymium magnet, ferrite magnet.

In this post,we would like to share you that what is different if we use different glues and adhesives. Even we will mention some specific glues. But as a professional magnet manufacturer,   we don’t recommend any brand or any pratical glues.

self-adhesive flexible magnetic strip

So before we start let us talk a little bit about our self-adhesive flexible magnetic strip. Ours is a premium product which uses the taser for 965 adhesives. This is protected by a pink or red plastic backing strip. The adhesive holds instantly but it achieves its maximum hold in about two days. Although taser for 965 is a strong adhesive, it can be defeated by the weight of whatever it is that  it is stuck to. so the key to using self-adhesive flexible magnets is to keep it for lightweight applications.

 

Right we’re going to start now by looking at ferrite magnets. These are sometimes known as ceramic or craft magnets. When you see these in craft shops,they usually have a dimple or a white spot on one side and this is to show you which side to put your a TC bond. We hope you can see the dimple there. The reason this has to be present is because with traditional crafting magnets. They are only magnetized on one face, the non-dimple face. So they will stick together that way , when you try to put dimple to dimple they don’t stick. We stopped stocking these traditional crafting ferrite magnets in 2012 , because we were inundated with complaints that they were simply not strong enough.

c8 ferrite magnet

We moved to using a much higher grader Ferrite called c8 which are 2 to 3 times stronger and these are magnetized.So that one flat face is north and the other flat face will be south.This is your true regardless of whether or not this is a disk or a block or a ring.Ferrite magnets are extremely versatile and you can use almost any adhesive you want to. If you look at the tested in your local hardware or DIY shop, you will see the packaging usually tells you what each adhesive will work with. Ferric magnets can be cast as ceramics so you can use anything that will work on a ceramic. You just need to make sure that the item you are sticking the magnet to will work with the same adhesive.

PVA crafting glue

So, for example, you can use a traditional hot-melt glue gun, PVA crafting glue.

different type adhesives

Then there is the choice of using a strong PVA glue ,such as the no more nails range. Contact adhesives .Two-part epoxy resins or  even super glue. You can also use sticky craft dot type adhesives.  We don’t know if you can see this very well. These are produced by a company called fantastic other brands.

Of course , magnets .available, you simply peel the backing and then stick the glue dot onto the magnet.

Lastly, we’re going to look at neodymium magnets.These are the strongest magnets you can get and they can be very thin .Before you start looking at adhesives. We just want to remind you that neodymium magnets are extremely brittle and can and do break if they are allowed to jump together. They may look like solid metal but they are made from a sintered powder . So please do not attempt to flex them, bend them. They will snap in half. We have a range of self-adhesive neodymium magnets . These are sold in pairs as you can see that one side has got 3M 467 adhesive which is protected by an easy to peel paper tabbed backing .

3M 467 adhesive for magnet

This is only available on a selection of thinner magnets and is usually really.

Only intended for card or paper crafting because the adhesive works best on card and paper.

When it comes to using adhesives with other new neodymium magnets. You need to look for something that is going to work with metal.So traditional PVA glue and hot melt glue is not going to work, the magnets are simply too strong.

So looking at adhesives that can work with metals.We’ve had very good results using our two different types of contact adhesives.This one is my current favorite product the serious glue, other brands are available.

You just need to make sure it was with metal. You can also use the two-part epoxy resin and our old friend the cyano-acrylic super glue.We tend to use either the contact adhesive or the super glue. We don’t tend to use the epoxy resin very often simply. Because of the fears these two contact adhesives we’ve used.

We’ve had great success with both and use them on magnets up to 12 millimeters in diameter by 3 mils thick much bigger than that.And you do need to use an epoxy resin .we’ve also got our glue dots from fantas-tak.

These we have also used with neodymium magnets and they work well. These are their permanent craft dots. And see here. They’ve worked well and are holding things on our office frigate as well as on our racking. Do a quick recap ferrite magnets almost any glue you like, neodymium magnets. You need to use a contact adhesive a super glue or an epoxy resin

Use Cube Neodymium Magnets For Magnetic Levitation

This post is part of our series on how to handle cube neodymium magnets safely. In this post, we are showing you how to safely put cube magnets together with the poles in a checkerboard pattern that is suitable for magnetic levitation. What you see is pyrolytic graphite being repelled by four cube neodymium magnets.

So let’s start with some tiny ones.

These can be arranged by hand alone but don’t for a second think they are weak! Just one of these will hold over a kilogram of iron. The only tool that we recommend for these tiny magnets is this simple locking board.

The iron plates underneath locks the loose magnets in place – or at least dampens the acceleration when putting the magnets together. These thin cube magnets are very fragile and will easily break if just thrown together. Alright. Here’s the checkerboard

pattern of north and south poles I’m going to make.

 

Let’s go ahead and take the first magnet off the stack… and place it on the locking board. The next magnet you need to turn 180 degrees before putting it on. The poles of the cube magnets can’t face in the same direction since only opposites attracts. Continue doing this and remember to turn every second magnet upside down.

 

There you go…

And now just some hints for restacking the cube neodymium magnets without breaking them. OK – what you’ve seen so far may be basic to most of you so let me raise the ante. These are tricky little bastards. They are just the size where they don’t look impressive like a huge one in some of our other posts but these will draw blood if you get pinched by them. Who said nerds don’t work out?

 

we have marked the north poles on these cube magnets with dots around the edges so we always know which two surfaces are the poles. Let’s build a checkerboard: Take the first magnet off the stack using a splitter tool. Put the magnet on the locking board with one of the pole surfaces pointing upwards. For the next cube neodymium magnet, you need a large wedge to slide the two cube magnets safely together.

Remember to turn the next magnet upside down so you’ve got opposite poles attracting each other. we will make a 3×3 pattern so let me just put another one on – mind the poles. Repeat until you have three of these 3×1 bars. Remember to keep them far apart so they don’t smash together. Take one of the bars and mind the poles. Take the next bar and put it upside down on the locking board following the rule of attraction between opposite poles.

Bring the bars together with the wedge in between and make sure the bars are aligned. Finish the project with the last bar. There you have it: nine powerful cube magnets put together with no loss of blood.

And here’s what they can do. Now for some hints on how we restock them. As always: Mind the poles.

How to Combine two large neodymium magnets

If you have experience with two large neodymium magnet, you must be known that it is very dangerous to combine them.

two large magnet combined

So we would like to show you how to safely put two large neodymium magnets together. And with a spacer in between the magnets. And the most important point, without any magnets splitting and shrapnel flying around.

So – what do you think we should need?the tool for combine large magnet

Well, we think we should use thick gloves.  And The thicker well be better. Wearing gloves will not prevent you fingers from being crushed if they are caught between the magnets in an accident. But they might make it easier to get your fingers unstuck again.

magnet and security board

Next, we need a security board. This is just a wooden plate with some metal plates glued to the bottom half.  You will also need what I call a locking board. It’s just a wooden board with a hole in it.  The diameter of the hole should be the same as that of the magnets. And the height of the board should be the same as the magnet plus the spacer.  Next, in line, we have a large wedge.  The width of the wedge should be the same as the diameter of the magnet or larger.

At last, we need wear safety glasses. If the magnets accidentally smash together.  They could shatter or chip sending very sharp fragments all around.  Personally, we suggest using a complete face shield with these larger magnets.

locking board with neodymium magnet

Okay – after we have collected all of the necessary equipment we need to clear our work area.  Remove all metals. Ya, all metal, so it means that it includes the keys in our pocket, our wristwatch, and our mobile phone.  Also be aware of lamps, radiators, and metal in the table that could interfere with our work.

And now for the part that we have been waiting for. Let’s combine the magnets and see if we can do it without hurting ourselves or chipping the magnets.

First, place the security board in our work area with the metal plates facing downwards and away from us.  Next, put one magnet on the board with its north pole facing upwards and let it slide into secured position over the metal plate.  If we don’t know the polarities of our magnets we will show you how to determinelocking board with space

it in an upcoming post.  Now place the locking board over the magnet and put our spacer on top of the magnet.  If anyone thinks the next step is to put the other magnet with the north pole facing upwards and sliding it over the spacer they would be completely wrong.  If we thought that we are not ready to handle large neodymium magnets yet.

Let us show you why.

combine neodymium magnet

Here we have – somewhat simplified – drawn in green color two of the magnetic field lines from the first large neodymium magnet.  Notice the direction of the magnetic field indicated with arrows.  If we put the second magnet in this magnetic field with its north pole pointing upwards it would act like a compass and try to turn around with a large force.  This is an uncontrollable position to combine the magnets from.  Instead, we need to put the wedge over the spacer and guide the second magnet in from far above,  Again with its north pole facing upwards.  Hold the magnet and wedge firmly and make sure our fingers are not between the two magnets.

If anyone feels resistance in the second magnet your polarity is wrong.

move neodymium magnet

Abort immediately by lifting the second magnet straight up and turn it 180 degrees around before trying again.  And then slide the wedge slowly away making sure that the wedge and the second magnet are aligned directly over the spacer.  The force needed will be higher and higher with the magnets coming closer and closer.  Adjust the second large neodymium magnet so it’s centered over the hole in the locking board.  Lift off the locking board and slide the magnets from the security board by pushing on the lower magnet.  Do not push on the spacer or the upper magnet.  Finally, we did it done.  In an upcoming post, we going to show you how to take them apart again.