This is a post just want to show you our mad magnet experiments. This will be our craziest so far. We are sure you haven’t seen this before. We’ll attempt to combine two 6×2 inch neodymium magnets. It is very dangerous and a hard work. Because of magnets with a rated pull force of 1200 kg each. Is it even possible or will us fail and end up with an expensive pile of magnet crumbles? We will show you the result.

Before the testing, we should remind you that, Neodymium magnets are not toys! Do not handle magnets of the shown size unless you know and accept all the risks involved.So why would we even attempt this? Because we know most of the people will interested at that, but as it also a dangerous testing. So let us take the risk.

Both of them are 6x2inch. Since then we’ve been planning how to combine the two magnets in a controlled way.

Neodymium magnets are brittle like a ceramic dinner plate and with a ton of pull force – literally – this project is more difficult and dangerous than you might think. It takes some preparation to avoid chipping or even shattering the magnets.

We have used wedges made of hardwood in the past but they are not solid enough for larger magnets.we hope these felling wedges made of plastic are the solution.

They are designed to be solid and not pop out when the weight of a tree is pushing down on them.But our worry is not them falling out. Getting them stuck in the pinch between the magnets is the problem. So we will off with the spikes.So far it’s been a one-man project to combine our magnets.

As this testing is very dangerous and we worry about the magnet will stuck. So we call for a secret helper. Helper has absolutely no experiences in handling powerful magnets but will more than double our forces in men versus magnets.

The first magnet is placed with its south pole facing upwards. And the heavy wedge is placed over the magnet.

We double-check the polarity and notice the low gauss reading above the wedge.

25 cm or 10 inch from the magnet. It is only 1% of the gauss reading flat at the surface of the magnet. Nicely low for safety but we still secure the wedge with some old belts to make sure the bottom magnet isn’t suddenly set free. The other magnet is placed in a carrier to make sure we never have our fingers between the magnets – again with the south pole upwards.

After an easy lift on it is time for the slide. One man pulling the wedge and one man pulling the magnet in opposite direction and trying to keep everything centered over the bottom magnet. And we can hear a sound which is the bottom magnet lifting up from the ground.

The magnets are now pinned on each side of the wedge. After reaching the plastic part the forces are now too high for this to work.

Even with the secret helper pulling so hard that everything slides across the carpet the magnets are not coming any closer.

We are so worried about that is this where it ends?

Time to come up with a plan B.

We decided to turn it into a tug of war.

Two men at one end and the two magnets at the other.

By a flaw in our design, it is possible for the wedge to go off-center. So of course, it happens…Off-camera we managed to center the wedge a millimeter at the time with a lot of twisting and manhandling.

After the final pull! However, it didn’t last long before something shook us. The noise was loud and unexpected! Still not sure what made this sound?

Your guess is as good as mine. After checking nothing bad has happened, so we carry on.

What a relief at that moment. The magnets are not stuck on the wedge and no humans or magnets were harmed. Only damage is a bite to one of the felling wedges. A tiny bit is stuck between the magnets but it is so flattened that it isn’t a problem. The magnets aren’t perfectly centered but with an awkward technique, we manage to align them.

Once all of the edges are aligned the magnets will not move anymore.They feel like welded. So here it is a 6×4 inch neodymium magnet.

More compact and safer to store than the two separate magnets and with a solid magnetic field. As you can say our table isn’t all wood.

We are so happy that this experiment ended so well. Maybe in future, we will think about how separate it.

This post about shows you how to handle large neodymium magnets safely and sometimes test their power just for the fun of it… we were often asked what neodymium magnet would be good for a beginner who would like to try the power of neo-magnets but has no experience with their power. In this post, we will try to answer this question based on our experience as the best Customize NdFeB Magnet Manufacturer. We don’t believe there is such a thing as a perfect beginner magnet that will suit you all. But we will set up some guidelines for what beginner should look for.

Don’t buy big neodymium magnet

Well, neodymium magnets are simply, and the most powerful permanent magnets ever invented. Only electromagnets can be stronger so if you have had fun with weak ferrite magnets you’ll most likely love neodymium magnets. However great power comes with great responsibility. A large neodymium magnet is dangerous. The big ones can easily crush the bones in your fingers beyond repair. Ya, beyond repair, in another word means that the bone will be crushed to be small pieces. So you should pay attention to the large neodymium. That does not a toy. For that reason, the most important thing to consider when you want to buy a neo-magnet is “size”. Do not buy a large one as your first time. Practice with smaller magnets and scale up as you gain experience. Large neo-magnets are powerful and expensive. So buying one as a beginner is like taking your driving license in a Ferrari. It could be fun but will most likely quickly end up being very expensive and bloody.

The size of magnet

So how big is large in this context? It may be smaller than you think. This is a 20 mm cubed neodymium magnet. It doesn’t look scary but this is more than enough to give you a nasty bite. In the past post, we showed how this magnet can lift over 20 kg. Imagine having skin pinched between the magnet and a solid metal bar. A 20 mm cube will easily give you blood blisters or even bite skin off. It will however not break your fingers but this magnet is the largest we can recommend for a beginner. If you’re not a responsible adult or don’t like the pain you should start smaller. This magnet is more controllable but still large enough to do some weight lifting. A typical fridge magnet will not lift 8 kg. So to sum up about size: buy smaller than you think and train yourself before going large.

The Shape of magnet

The next guideline is about the shape of a nice beginner magnet. There are a lot of shapes to choose. But we are only gonna show you the most common. Stay away from the more specialized shapes not shown. A beginner magnet should be simple, cheap, easily available and easy to handle safely. Here’s a common sphere magnet This is not recommended for a beginner. They are more difficult to produce than common shapes, so that is why their price is more expensive.

The poles are just tiny dots on the surface so they don’t have impressive lifting force. There’s simply not much magnet touching the material you want it to stick to. This also makes them self-destructive. There’s a lot of force on a tiny area on the poles so the coating will over time crack or wear off. The magnet will then corrode rather fast so sphere magnets need special handling and storage.

Not the easiest shape to handle. So how about a square magnet? It’s better since it has large pole surfaces that are easy to spot with the naked eye. However, it has sharp corners that will bite you hard if your skin is trapped. This one is also very thin. we don’t like thin magnets since all neodymium magnets are brittle. They look, feel and even sound very solid – like metal – but they are not! The shiny metal coating is very thin and only there to prevent corrosion. The magnetic material inside the magnet is a crystalline structure comparable to ceramic – like a dinner plate – so neo-magnets will easily break, chip or even shatter if they are not handled carefully. We always treat them like they were made of glass and never let thin or large magnets fly together or you could have sharp shrapnel flying around…

Here we have two disc magnets of roughly the same volume but we would prefer the thick magnet to the left. It is mechanically stronger and less prone to break in half. In practice, it will also feel magnetically stronger on small objects like a paperclip because there’s more magnet under each point on the pole surface. Okay, so a cube magnet would be a nice starter magnet? No… we do love cube magnets. They are our personal favorites but they are not nice beginner magnets. They still have sharp corners that bite hard and you can’t tell where the poles are with the naked eye. This can get you into trouble. Here are two cube magnets put together.

And then let’s see what happens when we try to turn them around. Here it is in slow motion. Notice how close we was to getting our skin pinched. It happens way faster than we can react. The problem was that they were not put together pole to pole like shown here with the south pole marked with blue. They were instead put together side to side like shown here. This should not be twisted but the magnets come unmarked from the factory so a beginner may mess it up. Not pleasant with 20 mm cubes like these. Therefore our recommendation goes to the disc magnet as the best shape for a beginner. No sharp corners, poles are easy to spot and it is a very common shape with a lot of sizes to choose from. Perfect!

The grade of magnet

Next up is the grade of the magnet. we have written a post about the magnet grade so we are not going  to go into details about that. But all you need to know is: the higher number in grade the stronger the magnet. The higher grades are more expensive but since a beginner should look for a small magnet. we will recommend a medium to high grade. In smaller magnets, a higher grade does not add much to the price.

The coating of magnet

The last guideline is about coating and this is the least important. The standard for neodymium magnets is a triple-layer coating of nickel-copper-nickel. This is good for a beginner magnet. There are other more advanced options but you don’t need them and other coatings limit the selection of magnets and often add to the price. For example, you can find some with the fourth layer of gold. It looks great but it doesn’t make the magnet perform any better. So no need to go for the more specialized coatings. Alright, that was our guidelines for choosing your first magnet.

Where to buy magnet

But where can these magnets be bought? we haven’t heard of a dedicated shop where you can walk in and pick up a selection of neodymium magnets off the shelves. It would also be a nightmare to handle. we did however find a few neodymium magnets for sale in a physical shop in the section with whiteboards but these offers are generally of low grades N35 or so to keep them as cheap as possible. They can be an easy and fast solution if you just want to give neo-magnets a try but if you want a large selection and some strong grades you should search for dedicated web shops. But then you run into another problem. The shipping is expensive for a single magnet. They need to ship it as a package. They can’t just ship it in an envelope because it may get stuck to something before arriving at your place. And web shops have a minimum value that you have to order. They simply lose money if your order is only a single 50 cent magnet they have to spend time on handling and shipping. Fair enough. So for a beginner, we can recommend a sample selection of magnets which some web shops offer. Here are the best sets we found so far. Unlike other sample sets, I’ve seen these don’t just come randomly stacked in bubble wrap but in boxes with foam inserts. we really like this organized solution. This is the set with tiny magnets. A great collection but too small if you are aiming for a lot of power.

The medium set is more powerful and may be the best choice for most. But for the same price, you can get the set with larger magnets. This set includes some nice disc magnets and is highly recommended – just be careful when removing the magnets. They are packed a little closer and may attract each other if you’re not aware when lifting a magnet out of the foam. Pull the magnet straight up and away from the other magnets. Oh! By the way… This set is called the macho set and it is not for beginners.

Hopefully, this will all help you into the world of neodymium magnets without too much pain. Feel free to ask questions if you’re still in doubt.

N52 Magnet, lots of people hear his name, and someone just confuses that is there really exist? And why it is hard to find N52 NdFeB magnet manufactory.

The N52 NdFeB neodymium-iron-boron magnet material is indeed existent, and there are indeed technologies that can produce such high-performance materials. However, the materials available on the market, and better than N48 and N50, it is the best in N grade. So N52 is the normal circulation material on the market. But was rarely used in the market.

And why it is so rarely on the market? Let ‘s introduce to you.

At first, we should know what does N stand for? As you know, if we divided the magnet according to the temperature, there are many grades, like N grade, M grade, H grade, SH Grade and so on.  And the N grade means that the magnet will demagnetize if the temperature over 80 degrees.

1. Highest Magnetic

The N52 grade NdFeB magnet has the highest magnetic in N grade. So we can know that the surface Gauss of N52 5*5 is more Gaussian than the surface of N45 5*5. In the testing, if we take 3 magnet, same shape same size but different grade, and we will found that, the N52 neodymium magnet is stronger 14% stronger than the N45 neodymium magnet and 60% stronger than an N35 neodymium magnet.  In normal, N45 magnet will be a good choice for lots of production solution.

N52 does not a good choice, because magnetic is too big, not too many customer need so big magnetic magnets.

2. Expensive

Compare with other grade magnets, the N52 grade is expensive. In normal, the material of N52 almost 10USD/KG higher than other grades magnet. Maybe you are wondering why the material is so high. That’s because N52 is not easy to produce. It needs a special formula to produce. In China, even lots of countries, not too company know how to produce it. But Osenc did it. In fact, Lots of customer from other countries buy N52 from us.

3. Hard to product

NdFeB magnets are as hard to find as antiques, and they are limited by the sintering technology of modern NdFeB magnets, and Japan’s Sintering technology is indeed able to sinter to produce materials that are truly compatible with N52 NdFeB magnets. Normally, the N35 NdFeB magnet material has a F64*54*35. Under normal circumstances, the magnetization direction of the NdFeB magnet material will not exceed the length and width of the material, because if the material is magnetized Once the direction is higher than the length and width of the material blank, the orientation of the magnetization of the magnetic molecules cannot be agreed.

In other words, magnets cannot be magnetized, so high-performance N52 neodymium-iron-boron magnets are used in production. The technical difficulty in the process and sintering process is more difficult than the production of the N35 material. So not too many manufactories can offer customer N52 Magnet.

Many people say that neodymium magnets are only used on headphones or small speaker, and that is rarely used on large-sized speakers. They cited several reasons. Let us check is it really?

1. The neodymium iron boron magnet is not high temperature resistant, and the H grade magnets (commonly used in most of the product) will start demagnetized beyond 120 degrees Celsius. More than 300 degrees Celsius, completely demagnetized. Neodymium magnets demagnetize due to high temperatures. For high-powered loudspeakers, it is difficult to avoid overheating. But if we Install some heatsinks, it will increase the weight and volume, and then the transportation costs will be increased too. The cost is also not as good as ferrites.
2. Heavyweight and high transportation costs. As we all know, neodymium magnets are magnetic and small in size. But why do many people still say that they have a large weight and high transportation costs? That’s because many people think that when the big high-power speaker works, it will over-heated, in order to avoid demagnetize, the speaker needs a fan or other cooling accessory to make the lama cool down. In this case, the fan will make the heavy-duty speaker heavier.  For a single loudspeaker that has a weight of more than 100kg, if the weight is heavier, it will further increase transportation costs.
3. High price. Compared to other kinds of magnets, the price of neodymium magnets is indeed higher. This will make the product difficult to sell. Alnico magnets are relatively inexpensive. So manufactory doesn’t use neodymium magnet on large-size speaker.

The above three reasons are the reasons why everyone thinks that large speakers do not use neodymium magnets in large size speaker. But are these reasons really true?

The answer is false. That s not true.

In fact, there are many big brand speakers in the market that already use neodymium magnets. For example, Faital Pro‘s 18-inch bass speaker use neodymium magnet; top manufacturer German BMS, 18-inch 1200W AES power speaker. Because these are top speakers, so there are not too many consumers know that, but the HiFi big fans know it. Now let us explain these three reasons for you.

1. large-size speaker, especially the air flow in the low-noise body, is also very strong and can play a certain role in heat dissipation. Meanwhile, there are lots of manufacturers through a special design to further reduce the temperature of the speaker.
2. The only consideration for using neodymium magnets is weight and volume. After all, large speakers are often moved, and logistics costs are a factor to be considered. In fact, many brands of speakers don’t need additional equipment for the cooling. But the speaker can effectively reduce the temperature. And protect the speaker well, no need to worry about the over-heating.
3.   3.About the cost, in fact, the cost is actually not within the factory’s consideration. Because of the relative price of large speakers and the savings in logistics costs, the price of Neodymium magnets is only a small problem. And we can ignore it.

What we talk about customized magnet and the traditional magnet is the magnet in the daily, not the industrial magnet.

When magnets were first introduced they came in certain shapes and sizes according to their strengths, weaknesses, and uses. These were the traditional magnets i.e. bar magnets, horseshoe etc. which were used for different tasks in our everyday lives. With the change in technology, new things were discovered such as custom magnets i.e. magnets that are personally made. In this article we will talk about both the custom made and the traditional magnets by discussing the differences:

1. Goals: There is always an aim or a goal for creating something and thus when these magnets were made they had a goal.

• Customised Magnet: When an object is customized it is generally created for an occasion or an event and is done with an idea in mind. It is designed and then created accordingly with proper sync with everything else i.e. the material or colors
• Traditional Magnet: Traditional magnets are made almost every day with the same ingredients and for the same task they are used for years now. The goals for these magnets remain constant and don’t change according to requirement.

2. Household Works: In our everyday lives we need magnets in many operations and their tools. Now, for the different magnets different works are specialized:

• Customised Magnet: These are used for sticking up items on your fridge or using them as a beautiful paperweight. They can be also used for gifting someone during a festive season. You can also create these to make the number or nameplates for your house.
• Traditional Magnet: These magnets are generally used in equipment or tools for household works and not decoration. These are very strong magnets with a constant concentration of magnetic fields and thus they can be used everywhere.

3. Quality: While you are comparing these two types of magnets, one very big difference between the both is about the quality.

• Customised Magnet: The customized magnets are made from the scratch by keeping in mind the various needs of the customer. Now, the customer is shown all the samples and then a final product is created so the quality can be decided by them within their budget.
• Traditional Magnet: The quality of a traditional magnet is pre-decided. No one is going to re-calculate the composition for changing the quality; it was made with a purpose in mind. So, the quality of the traditional magnets remains constant over the time but get better when the material is changed or upgraded.

4. Strength: Similar to qualify the strength of these magnets completely depends on what it is made of:

• Customised Magnet: The strength of these magnets are generally on the lower side since they are made mostly for promotional or decoration purposes.
• Traditional Magnet: In this case, the strength of the magnet is everything since they are mainly used for tools, equipment, and other harder jobs. The composition maintains the strength of the magnet by checking the magnetic fields and if they are produced properly.

These are some of the major comparisons between these two magnets. One can always choose the one preferred for their job by looking at these points. Remember nothing can be measured with naked eyes so always check when you are purchasing.