FAQ - Questions and answers about neodymium magnets

Neodymium magnet – what is it and how does it work? What do we use these strong magnets for?

Immerse yourself in the fascinating world of neodymium magnets – discover their extraordinary power and versatile applications! You will find here detailed answers to the most frequently asked questions, helping you better understand how they function and what they can be used for. Learn why neodymium magnets are considered the most powerful among permanent magnets and how their use can make your life easier.

1. Orders, logistics, and payments

Everything about the purchasing process, B2B invoices, and international shipping.

We offer a wide range of safe payment methods: quick online transfers via BLIK, traditional bank transfer, as well as cash or card payment to the courier upon delivery (COD).

Transaction details:
All electronic transactions are encrypted with SSL protocol (256-bit). In the case of a traditional transfer, we ship the goods after the payment is credited (usually the next business day). Cash on delivery allows for immediate shipping. Full transfer details can be found in the transport and payments tab.

Orders placed and paid for (or COD) by 2:00 PM on business days are usually shipped the same day. Couriers deliver packages in 95% of cases within 24h (the next business day).

Logistics in detail:
The DHIT warehouse operates continuously on business days. If you order goods on Friday before 2:00 PM, the courier will pick them up the same day, and delivery will take place on Monday. InPost Parcel Lockers in some regions are also serviced on Saturdays ('Parcel in Weekend' service), but this depends on the carrier's current offer. You will receive the shipment status via email immediately after the label is generated.

The cost depends on the total weight of the order and the selected method (Courier, Parcel Locker, Pallet). We offer free delivery for orders above a certain amount.

Why does weight matter?
Neodymium magnets are heavy (density similar to steel). A small package can weigh several kilograms. The cart system automatically sums up the weight of all products and selects the cheapest option. The detailed price list can be found in the transport section.

Yes, we are a registered VAT payer. We issue a full 23% VAT invoice for every order.

Information for accounting:
The invoice is generated automatically after the goods are shipped and sent in PDF format to the e-mail address provided in the order (according to the 'paperless' idea). If you need a paper invoice attached to the package, please include this information in the order notes. We also handle ICS (Intra-Community Supply) transactions with a 0% VAT rate for EU companies with an active VAT-EU number.

Yes, we ship to all European Union countries. The cost of international shipping is calculated automatically in the cart after selecting the delivery country.

Transport restrictions:
Due to the strong magnetic field, air transport (outside Europe) is subject to restrictive IATA regulations (Class 9 dangerous goods). Therefore, we standardly offer road transport within Europe. If you wish to order air shipping (e.g., to the USA), please contact us individually for a quote on special shielding packaging.

IATA regulations are strict. In hand luggage, strong neodymium magnets are usually prohibited because their field can interfere with navigational compasses in the cockpit. If airport security detects strong magnetic pull, the item may be confiscated. In checked baggage, transport is possible, but only under the condition of solid shielding (e.g., a thick layer of Styrofoam and sheet metal), so that the magnetic field does not penetrate outside the suitcase.

2. Basics: what are magnets?

Definitions, chemical composition, and basic differences between materials.

It is the strongest type of permanent magnet commercially available on Earth. It is made of sintered powdered elements, mainly Neodymium, Iron, and Boron.

Chemical formula and structure:
The basic component is the tetragonal phase Nd₂Fe₁₄B. This structure has exceptionally high magnetocrystalline anisotropy, which means it is very difficult to change the direction of its magnetization. This feature gives neodymium magnets such huge coercivity (resistance to demagnetization) and allows them to store powerful magnetic energy in a small volume.

This is a group of 17 chemical elements that are key to modern technology. Neodymium (Nd) is the most important of them in magnet production.

Full list of Rare Earth Elements (REE):

Scandium (Sc, 21)
Yttrium (Y, 39)
Lanthanum (La, 57)
Cerium (Ce, 58)
Praseodymium (Pr, 59)
Neodymium (Nd, 60) – key component of magnets
Promethium (Pm, 61)
Samarium (Sm, 62) – used in SmCo magnets
Europium (Eu, 63)
Gadolinium (Gd, 64)
Terbium (Tb, 65) – additive increasing temperature resistance
Dysprosium (Dy, 66) – same as above
Holmium (Ho, 67)
Erbium (Er, 68)
Thulium (Tm, 69)
Ytterbium (Yb, 70)
Lutetium (Lu, 71)

The name 'rare' is historically misleading – these elements are quite common in the Earth's crust, but they rarely occur in large, concentrated deposits, making their extraction and separation a difficult, expensive, and environmentally burdensome process.

The difference is gigantic, both in power and applications. A neodymium magnet is about 10 times stronger than a ferrite one of the same dimensions.

Comparison of properties:

Strength (BHmax): Neodymium (up to 52 MGOe) vs Ferrite (up to 4 MGOe).
Appearance: Neodymium is silver (nickel-plated), Ferrite is dark gray/black (ceramic).
Corrosion: Neodymium rusts very easily (must have a coating), Ferrite is completely resistant to rust (iron oxide).
Price: Neodymiums are much more expensive due to the content of rare earth elements.
Conductivity: Neodymium conducts electricity (metal), Ferrite is an insulator.

3. Magnet fishing (underwater search)

Equipment selection, GOLD series (3 eyelets), technical tips, and law.

These are our flagship models that solve the biggest problem for searchers: 'how to position the magnet so it doesn't stand up on the bottom?'. Thanks to the housing with 3 mounting holes (one central, two side), you have full control.

Detailed specification of the GOLD series:

F200 GOLD (UMP 75x25 [M10x3]): Ideal compromise. Field intensity ~7500 Gauss. Two side mounts and one top. Great for starting, light but effective.
F300 GOLD HOLOGRAM (UMP 94x28 [3xM10]): Universal 'workhorse'. Larger diameter (94mm) and thickness (28mm) generate a field of ~9000 Gauss. This is the model most often chosen by advanced amateurs.
F550 Silver Black (UMP 94x40 [3xM10]): A monster for special tasks. It has a special Silver Black coating resistant to salt and harsh chemical conditions. It is almost twice as thick as the F200, which translates to deep magnetic field penetration.

Physics of 3 holes:
By mounting the eyelet on the side, you shift the center of gravity. Pulling the rope forces the magnet to lie flat against the river bottom. Thanks to this, you use 100% of the active surface of the magnet, not just its edge (as in cheap magnets with one top eyelet).

For an adult who wants to really find something, and not just 'dip a line', we recommend avoiding the weakest models (below 100kg) and aiming for the mid-range.

Our sales ranking and recommendations:
1. Choice No. 1 (Universal): Set F200 GOLD (290kg). This is the best price-to-performance ratio. You will pull out a bike, safe, or road signs, and you won't tire your arm after 10 throws.
2. Choice No. 2 (Strong): F300 GOLD (330kg+). If you have the budget and strength, this model will give you an advantage thanks to a wider magnetic field (you search the bottom faster).
3. Choice No. 3 (Extreme): F550 Silver Black. Only for people aware of the risk – this magnet 'sticks' so strongly that detaching it from a flat sheet underwater may be impossible without a winch.

The rope is your only protection against losing equipment worth hundreds of zlotys. Ordinary construction twine is not enough.

Physics of the rope and knot:
Every knot weakens the rope by about 30-50% of its nominal strength (notch effect). Therefore, the rope must have a huge reserve of power.

Material: Polypropylene (PP). It does not absorb water (doesn't get heavy), is resistant to acids and bases, floats on water (easier to fish out if you let go of the end).
Braid: Core braid. The outer sheath protects against abrasion on stones, the core carries the weight.
Diameter vs Ergonomics: For F200, 6mm is enough (strength ~500kg). For F550, we recommend 8-10mm. Why? A thin rope under heavy load acts like a knife – it cuts into hands. A thicker rope means greater pulling comfort.

The topic arouses controversy, but the law is precise regarding monuments and weapons. Casting a magnet into the water itself is not prohibited (it is not fishing), but what is key is WHAT you pull out.

Legal interpretation:

Monuments (Act on the Protection of Monuments): Searching for hidden or abandoned monuments using electronic and technical devices (including magnets) requires a permit from the Provincial Conservator of Monuments (WKZ). If you pull out an old sword, coin, or tank part – it becomes the property of the State Treasury. Appropriation is a crime.
Weapons and unexploded ordnance (Act on Weapons and Ammunition): Fishing out a gun or grenade imposes on you the obligation to immediately notify the Police (112). You must not move it, take it home, or clean it. This is a deadly threat (unexploded ordnance is chemically unstable) and a criminal risk (up to 8 years in prison for possession).
Utility scrap: Pulling out modern trash (caps, pipes, cans) is treated as cleaning the environment and is allowed, unless the regulations of a given water body (e.g., PZW) state otherwise.

River water is a chemical cocktail. Neodymium (Nd), which is part of the magnet, is a very reactive element and without a coating, it oxidizes (rusts) before your eyes, turning into powder.

Maintenance procedure:
1. Washing: After fishing, rinse the magnet with clean tap water (wash off silt, algae, and humic acids).
2. Drying: This is key. Wipe it dry. Water trapped in the handle housing will cause the core to swell and the nickel coating to crack.
3. Maintenance: Lubricate the steel handle housing with oil, WD-40, or wax. The steel housing (even galvanized) loses its protective layer over time from hitting the bottom. F550 Silver Black models have better factory resistance, but also require care.

A magnet with a lifting capacity of 300kg sucked onto a flat bulkhead driven into the bottom is impossible to detach with human muscle strength if you pull straight towards yourself (along the vector of attraction force).

Rescue techniques:

Change the vector (Angle): Walk 50-100 meters sideways along the bank. By pulling at an angle, you change the peeling force (the greatest) into a shearing force (sliding), which is about 80% lower. The magnet will slide to the edge of the obstacle and let go.
'Shot' method: Tension the rope like a guitar string and release it abruptly. The shock wave on the rope can break the magnet's grip.
Leverage: Use a thick branch as a lever, wrapping the rope around it.
Last resort: Hand winch or car winch. Remember – the rope has its breaking strength!

Water hides the history of the last 100 years. Polish rivers and lakes are full of surprises.

Finds statistics:

80% - Scrap: Caps, nails, wires, fence fragments, cans, parts of agricultural machinery.
15% - Utility items: Bicycles, scooters, workshop tools (wrenches, hammers), fishing rods, phones, and even safes (usually empty after theft).
5% - Militaria and history: Bayonets, helmets, casings, weapon parts, uniform buttons. Most people start their adventure with Magnet Fishing for this 5%.

A bad knot weakens the rope by up to 50%. In Magnet Fishing, we recommend two knots: the Palomar Knot (very simple and retaining up to 95% of the rope's strength) or the Double Figure-Eight (a climbing classic, easy to untie after tightening). Avoid simple overhand knots and never hook the rope directly onto the sharp metal of the eyelet – use a thimble or proven hitch knots.

4. Technical parameters and physics

Detailed knowledge for engineers and constructors.

This is the designation of the material's energy class (Grade).

Deciphering the symbol:

Letter 'N': Means 'Neodymium' and standard maximum operating temperature (80°C).
Number (e.g., 38, 42, 52): Means the so-called BHmax (Maximum Energy Product) expressed in MegaGauss-Oersteds (MGOe).

What does this mean in practice?
The higher the number, the stronger the magnet at the same volume. An N52 magnet is about 35-40% stronger than an N35 magnet of identical dimensions. N52 is currently the strongest material available in mass production.

Standard neodymium magnets (without a letter after the number, e.g., N42) lose their magnetic properties irreversibly if heated above 80°C.

Available high-temperature classes:

N (Standard): up to 80°C
M (Medium): up to 100°C
H (High): up to 120°C
SH (Super High): up to 150°C
UH (Ultra High): up to 180°C
EH (Extra High): up to 200°C
AH (Axial High): up to 230°C

Remember that as temperature resistance increases, the maximum available power (remanence) of the magnet usually decreases slightly.

These are two key parameters describing every magnet in physics.

Remanence (Br):
This is the so-called magnetic remanence. It determines how strong a magnetic flux remains in the material after its saturation. For neodymiums, it is usually from 1.1 to 1.48 Tesla. This parameter speaks about the 'strength' of the magnet.

Coercivity (HcJ):
This is the magnetic field intensity needed to completely demagnetize the material. The higher the coercivity, the harder it is to 'spoil' the magnet through external fields or temperature. Neodymiums have very high coercivity, which is why we call them permanent magnets.

Internal induction (Br) is often confused with surface induction.

Measurements:

Inside the material (Br): 11,000 - 14,800 Gauss (1.1 - 1.48 T).
On the pole surface: Depends on the shape! A flat plate magnet may have 2,500 Gauss, and a long N52 cylinder even 6,500 Gauss at the center of the pole. Usually, it is from 0.3 to 0.6 Tesla.

We measure this using a tesla meter (gauss meter) with a Hall probe.

Neodymium magnets rarely have factory markings. You can check this in 3 ways: 1. Compass: Remember that the North needle of a compass (N) is attracted to the South pole of a magnet (S). 2. App: Smartphones have a magnetometer – 'Pole Detector' apps will indicate the polarity. 3. Another magnet: If you have a reference magnet with markings, check which side repels (like poles repel).

5. Mounting, gluing, and processing

How to safely join magnets with other materials.

Magnets have a smooth, nickel-plated surface that is difficult to glue.

Recommendations:
The best results are obtained with two-component epoxy glues (e.g., Distal, Poxipol, UHU Endfest 300). They create a hard joint that fills irregularities well. For very small magnets, cyanoacrylate glues ('SuperGlue') can be used, but they are brittle and may let go upon impact. The magnet surface should be degreased before gluing (alcohol, acetone) and gently roughened with sandpaper (watch out for dust!).

ABSOLUTELY NOT!

Hot glue guns heat the glue to temperatures of 150-200°C. Applying such hot glue to a standard neodymium magnet (max 80°C) will cause its immediate, partial, or total demagnetization. The magnet will lose power irretrievably. Use only cold glues.

Forceful tearing (pulling in opposite directions) is doomed to fail with strong magnets.

Sliding technique:
1. Place the joined magnets on the edge of a stable, wooden table (wood is not magnetic).
2. Lean one magnet against the tabletop and slide the other one off the edge.
3. Pressing hard, slide one magnet off the other downwards. The shear force needed to move it is much smaller than the pulling force.
4. Immediately move the magnets away from each other to a safe distance (min. 50 cm) so they don't 'snap' back (this risks crushing fingers and breaking magnets).

For a self-adhesive magnet to hold permanently: 1. The surface must be smooth, clean, and degreased (isopropyl alcohol). 2. After sticking, press the magnet firmly for a few seconds. 3. Wait 24h before loading – the glue needs time to set (cross-link). Gluing cold or to rough walls (plaster) usually ends in detachment.

6. Practical applications

Inspirations for home, workshop, and industry.

Technically, a strong magnetic field can disrupt the operation of older rotor counters, magnetic couplings in water meters, or discs in electricity meters.

Legal warning:
Using magnets for this purpose is illegal and treated as theft of utilities (energy, water, gas). Modern meters are equipped with special magnetic field strips/indicators. Bringing a neodymium close causes an irreversible color change of the indicator or logs an error in the electronic meter's memory. During an inspection, this is irrefutable proof of manipulation, which results in huge financial penalties (often counted in thousands of zlotys) and criminal proceedings.

Yes, it is a very cheap and effective way to protect the engine.

How does it work?
During engine operation, microscopic metal filings are created (wear of bearings, rings, shafts). The paper oil filter catches impurities down to approx. 20-30 microns. Smaller filings circulate in the oil, acting like abrasive paste. Attaching a strong neodymium magnet to the filter housing (or drain plug) catches ferromagnetic particles from the flowing oil, 'gluing' them to the wall. When changing the oil and filter, you throw away these impurities along with the old filter.

Glass boards are a challenge for magnets.

Physics of the problem:
Such a board consists of a steel sheet covered with a thick pane of glass (usually 4-6 mm). Glass creates a huge 'air gap'. The attraction force of a magnet decreases drastically with distance (inverse square law). Ordinary black ferrite magnets are too weak to penetrate through the glass. You need large, thick neodymium magnets (e.g., cylinders 20x10mm or cubes) that generate a sufficiently deep magnetic field.

To open store security tags (clips), special magnetic detachers with a specific field shape (often concave) are used. A regular flat neodymium magnet, even a strong one, may not work because the field must be focused inside the clip lock. We offer professional detachers for boutiques and clothing stores.

This is a decorating hit. Instead of drilling hooks into walls, use magnetic tiebacks. You need two magnets (preferably cylindrical, e.g., 10x10mm or larger for thick drapes), covered in fabric or connected by a decorative cord. This allows you to style curtains freely, and the magnets 'release' when pulled, preventing fabric damage.

Neodymium magnets make the perfect 'invisible latch'. Mount one magnet inside the door and another in the cabinet frame (mind the polarity attraction!). The magnet's force keeps the door closed against small children or pets, while an adult can open it with a stronger pull. For kitchen cabinets, we recommend countersunk rectangular magnets.

In locksmithing and welding, magnets act as a 'third hand'. Magnetic welding angles allow you to precisely position pipes or profiles at 45°, 90°, or 135° angles without an assistant. There are also magnetic ground clamps – allowing you to instantly attach the welder's ground cable to any point on a metal table or workpiece.

This is the best way for a removable mosquito net. Use magnetic tape (Part A on the window frame, Part B on the net frame) or small neodymium magnets glued in the corners. This allows you to remove the net in one motion for winter storage or window cleaning without any hassle.

Only if they are specially protected. The standard coating (Nickel-Copper-Nickel) is not perfectly watertight and will start to corrode in continuous contact with water. Warning: Neodymium and copper oxides released into the water are toxic to fish and invertebrates. For aquariums, use only magnets encased in sealed plastic (waterproof) or coated with a thick layer of epoxy resin.

For building generators (axial flux PMG), large block magnets (e.g., 40x10x5mm or larger) of grade N38 or N42 are most commonly used. It is crucial to position them precisely on the rotor (discs) with alternating N and S poles. We recommend using epoxy glue to bond them, and then casting the whole assembly in resin so that centrifugal force does not rip the magnets out during rotation.

This is a useful workshop trick. To make a screwdriver hold screws, simply slide a strong neodymium magnet along the metal shaft of the screwdriver several times in one direction (from the handle to the tip). This aligns the magnetic domains in the tool steel. To demagnetize it, slide the magnet in the opposite direction or lightly tap the tool against a table.

This is a simple DIY project. The best way is to use self-adhesive magnetic sheet. Print your photo on stiff paper, cut it out, and then stick it onto the magnetic sheet (peeling off the protective layer). Finally, trim the excess magnetic sheet with scissors along the edges of the photo. Such magnets are lightweight, safe for children, and do not scratch the fridge.

7. Safety and health

Hazards for people, children, and electronics.

These are not toys. The attraction force of large neodymiums is so huge that it can crush fingers, and even break hand bones if they get between two colliding magnets. The collision of magnets also causes sharp pieces of coating and material to chip off (like glass). Always use protective glasses and thick gloves when working with large magnets.

YES, THEY ARE DEADLY DANGEROUS.

Pacemakers and implantable cardioverter-defibrillators (ICD) have built-in magnetic switches (reed switches) used to switch them into service/test mode. Bringing a strong neodymium magnet close can:
1. Switch the pacemaker to constant (asynchronous) mode.
2. Disable therapy in the defibrillator (it won't work in case of a heart attack).
People with implants must maintain a safe distance, usually a minimum of 30-50 cm from magnets.

Swallowing one small magnet usually ends in its natural excretion. Tragedy begins with swallowing two magnets (or a magnet and a battery/ball).

In the intestines, two magnets can attract each other through the intestinal walls, pinching the tissue between them. This leads to necrosis, intestinal perforation, sepsis, and life-threatening danger. Immediate surgery is required. Therefore, neodymium magnets (e.g., NeoCube balls) must be kept strictly out of the reach of small children.

The myth about destroying electronics comes from the times of floppy disks and CRT monitors.

Modern electronics:

Smartphones: They are relatively safe, but a strong field will disrupt the compass, magnetometer, and may affect optical image stabilization (OIS) in the camera. Usually, after removing the magnet, everything returns to normal.
SSD drives / Memory cards / Pendrives: They are completely resistant to magnetic fields (electronic recording, not magnetic).
HDD drives (platter): They have strong neodymium magnets inside, but applying a gigantic magnet from the outside can damage data or mechanics.
Payment cards: The magnetic strip will be erased. The chip is safe.

8. Troubleshooting

Why doesn't the magnet work as it should?

This is the most common problem. The lifting capacity given in the specification (e.g., 100 kg) refers to the perpendicular breakaway force (pulling perfectly upwards).

When you hang a magnet on a wall (vertically), a shear force acts on it (gravity pulls down). The force needed to slide the magnet on metal is usually only 15-20% of its maximum lifting capacity. Additionally, neodymium magnets are coated with nickel, which is very smooth and slippery. To prevent the magnet from sliding, you must increase friction – use a magnet in a rubber housing or back it with thin rubber/insulating tape.

Not every steel is magnetic. It depends on its crystal structure.

Austenitic steels (e.g., 304, 316): Are the most popular in gastronomy and balustrades. They are non-magnetic (or very weakly magnetic after processing). The magnet won't catch them.
Ferritic (e.g., 430) and martensitic steels: Are magnetic and attract magnets, although usually weaker than regular black steel.

Always check the type of steel before buying magnets.

It is a myth. The static magnetic field from souvenir magnets has absolutely no effect on power consumption, the door's thermal insulation, or the efficiency of the cooling compressor. You can safely collect memories on your fridge without worrying about the bills.

The magnet itself doesn't damage the fridge, but its sliding surface might. Cheap ceramic magnets have a rough bottom that acts like sandpaper on glossy/stainless steel finishes. Solution: Stick a piece of felt, electrical tape, or foil on the back of every new magnet to create a soft spacer between the magnet and the door.

This is the most common surprise for new users. A neodymium magnet, although it looks like metal, is physically a sintered ceramic (like a coffee mug). It is very hard but extremely brittle. If two strong magnets collide from a large distance, the impact energy is so high that the material cannot withstand it and cracks or chips. This is not a manufacturing defect, but a characteristic of the material. Magnets must be handled gently.

9. Water and fuel magnetizers (Turbomag)

How to get rid of scale in pipes and save fuel?

The magnetizer does not remove calcium from the water (it is not a filter), but changes its physical structure. A strong magnetic field causes the precipitating calcium carbonate not to crystallize in the form of hard, depositing 'scale' (calcite), but in the form of soft powder (aragonite), which is flushed out of the system. Thanks to this, you protect washing machines, dishwashers, central heating boilers, and sanitary installations from overgrowth.

The best place is the main water supply pipe to the building, after the water meter, and before branching to the house. In the case of protecting a specific device (e.g., an expensive gas furnace), it is worth installing a smaller magnetizer directly on the return pipe before the furnace. Our magnetizers are overlays – you don't have to cut pipes, installation takes 5 minutes.

Yes, provided a sufficiently strong field is used. Magnetization of fuel (gasoline, diesel, LPG) causes the ordering of hydrocarbon clusters. Thanks to this, the fuel-air mixture burns more thoroughly and faster. The effect is smoother engine operation, reduced exhaust smoke, and fuel savings of 5-12% depending on the engine type and driving style.

10. Magnetic separators (industry)

Cleaning loose and liquid products in production.

A separator serves to catch unwanted metal (ferrous) elements from the transported raw material. They are used in the food industry (flour, sugar, grain), plastics (granulates), recycling, and mining. They protect crushing machines from failure and ensure the purity of the final product (HACCP systems).

It depends on the type. Simple separators (e.g., rods, grates) are cleaned manually – by removing them from the product stream and wiping with a cloth or compressed air. Automatic and semi-automatic separators have impurity discharge systems (e.g., sliding cleaning sleeves), which allows for continuous operation without stopping the production line.

The standard in the food industry for catching fine filings is min. 6000-8000 Gauss on the rod surface. For very demanding applications (e.g., powdered milk, spices), neodymium separators with a power of 10,000 - 12,000 Gauss are used, which catch even paramagnetic dust (e.g., abraded stainless steel after processing).

11. Toys and education

NeoCube balls, physics experiments, and learning.

NeoCube is a set (usually 216 pieces) of strong neodymium magnetic balls with a diameter of 5mm. It allows for creating an infinite number of shapes, chains, and 3D geometric figures. It is great anti-stress and logical fun for adults and teenagers. Warning: Product unsuitable for small children (risk of swallowing!).

Neodymium magnets are a great teaching aid. You can build: 1. Homopolar motor (battery, magnet, wire). 2. Magnetic train (battery, two magnets, and copper wire coil). 3. Show the phenomenon of eddy currents by dropping a magnet inside a copper pipe (it will fall very slowly). You will find all accessories in our education section.

12. Custom manufacturing and services

Unusual magnets and solutions for companies.

Yes. As a direct importer and distributor cooperating with factories, we can supply magnets of any shape (arc, trapezoidal), dimension, and magnetization direction. The minimum order quantity (MOQ) depends on the size of the magnet and the degree of complexity (usually from several dozen to several hundred pieces). The lead time is approx. 6-10 weeks.

Unfortunately, we do not provide services for regenerating old magnets. Magnetization requires dedicated coils (magnetizers) perfectly matched to the shape of a specific magnet. It is often cheaper and faster to buy a new, stronger neodymium magnet of similar dimensions.

Yes, for companies and industry, we offer a magnetic field measurement service (e.g., of separators) with a certified gauss meter. We issue a measurement protocol necessary for HACCP / ISO audits.

13. Automotive and workshop (PDR, Taxi)

Magnets in the car, body repairs, and organization.

For this purpose, rubber-coated magnetic holders (with external or internal thread) are used. The rubber protects the paint from scratching and increases friction, preventing sliding at high speeds. We recommend using several holders with a diameter of min. 66mm or 88mm for secure mounting.

In the PDR (Paintless Dent Repair) method, very strong neodymium magnets (often in the shape of a sphere or cylinder) are used to locate the lance tip under the sheet metal and to pull out shallow dents using the induction method. These magnets must be protected with material (e.g., felt) so as not to damage the paint.

Yes. A magnetic plug catches iron filings from the gearbox or oil pan that settle to the bottom. This is especially important during the engine break-in period and in older cars where the wear of metal parts is greater. It is cheap protection against failure.

This is a popular mod in tuning. You need a set of neodymium magnets (usually 4 pieces per plate) glued to the inside of the bumper and on the plate. Important: Magnets must be protected with soft tape or rubber so as not to scratch the paint, and their strength must be selected so that the plate does not fall off at 140 km/h, but can be removed by hand. We recommend plate magnets MPL 40x18x10mm - 2 pcs under the bumper, and MPL 40x20x5mm under the plate.

14. Construction and renovation

Locating profiles, inspection flaps, and cleaning.

You don't need an expensive detector. A strong neodymium magnet (e.g., cylinder 20x10mm) is enough. Move it slowly over the wall. The magnet will 'stick' in the place where steel screws fastening the board to the frame are located. This is the cheapest and most reliable way to avoid drilling into the profile.

Use a set: 4 plate magnets glued to the opening frame and 4 steel plates glued to the tile/flap. Thanks to this, the flap holds flush with the glaze, and in the event of a plumbing failure, it can be easily removed, e.g., using a glass suction cup.

You can do this fastest with a magnetic sweeper (trawl). It is a device on wheels with a wide magnetic beam at the bottom. You drive over the grass or sand, and the magnet pulls out all nails, screws, and filings, protecting your car tires and household members' feet.

To make an inspection hatch for a bathtub or chimney: 1. Drilling: Use a diamond hole saw to cut a hole in the tile. 2. Gluing: Glue the magnet flush with the wall surface (using mounting adhesive), and glue a steel plate to the masking tile. Remember, the magnet must be embedded in the glue and not protrude, so the tile sits perfectly flat.

15. Advertising and printing

Mounting banners, magnetic foils, and gadgets.

Magnetic foil is flexible (can be cut with scissors), but it is very weak. It is used for making fridge magnets (promotional items) or car stickers. It is not suitable for hanging heavy objects. For mounting banners or advertising boards, you must use hard neodymium magnets.

If the substrate is steel (e.g., a warehouse hall made of sandwich panels, a container), use magnetic hooks. They are mobile – you can change the position of the advertisement at any time without leaving holes. Remember to select the lifting capacity with a margin for wind gusts.

In printing (folders, premium boxes), thin plate magnets (e.g., 10x10x1mm or round 10x1mm) hidden under a layer of paper are used. Precise pairing of poles is important so that the box closes with a pleasant 'click'.

16. Modeling and hobbies (figures, RC)

Magnets in wargaming, flying models, and mock-ups.

The standard is small cylindrical magnets with dimensions 3x2mm or 5x2mm (depending on the base size). They are glued into the bottom of the base, which allows for safe transport of the army in metal cases (figures do not bang against each other).

Instead of ugly clips, modelers use 'invisible mounts'. You need 4 pairs of strong ring or plate magnets. You glue one part to the chassis posts, the other to the inside of the body. The body holds firmly, and no holes are visible from the outside.

Neodymium magnets work great for mounting interchangeable weaponry in tank/plane models or removable roofs in dollhouses. Use drill bits with the diameter of the magnet to hide it flush with the surface.

17. Tailoring and fashion

Magnetic clasps, handbags, and clothing.

Yes, we offer special magnets in PVC covers for sewing in. The plastic casing allows machine sewing around the magnet while protecting it from moisture (washing). They are ideal for invisible clasps in coats or jackets.

The most commonly used are so-called magnetic snaps. They consist of 4 elements (two plates, two magnets with 'prongs'). Installation does not require sewing – just cut the material, insert the prongs, and bend them with pliers. It is a quick and durable repair.

Regular neodymium magnets – no. Water and detergents will destroy the nickel coating, and the magnet will rust and stain clothing. For clothing, use only waterproof magnets (in PVC foil) or special snaps made of brass/stainless steel.

18. Office and organization

Boards, cable organization, and magnetic paints.

Magnetic paint contains iron filings, but their layer is very thin. Regular school magnets are too weak. For magnetic walls, you must use light but strong neodymium magnets with a large contact area. Avoid heavy ceramic magnets that slide down under their own weight.

You can glue small magnets to cable plugs (using heat shrink or tape), and mount a metal strip on the edge of the desk. This keeps cables from falling behind the desk, and they are always at hand. This is a popular 'lifehack'.

Yes. Glass boards require special, very strong magnets in a housing (often in the shape of a pawn or cylinder). Regular office magnets will not penetrate through thick glass. Look for products marked as 'for glass boards' in our offer.

19. Meteorite hunting and geology

Identification of stones and mineral separation.

Most do. Over 90% of meteorites (chondrites, siderites) contain nickel-iron, which reacts to a magnet. A strong neodymium magnet is a basic tool for a meteorite hunter. However, remember that attraction does not give 100% certainty – magnetite (an earthly stone) also reacts to a magnet.

Gold prospectors use magnets to separate so-called 'black sand' (magnetite) from the pan. Magnets in a special housing with a release mechanism are used for this (so you don't have to clean the magnet of filings by hand). The magnet pulls out the black sand, leaving the gold, which is non-magnetic, at the bottom of the pan.

20. Electronics and sensors

Reed switches, Hall effect, and DIY projects.

Hall sensors detect magnetic fields. A small neodymium magnet (e.g., 3x3mm) is usually enough to trigger them. They are used in speed measurement, electric bike throttles, or as limit switches in 3D printers. Proper pole alignment relative to the sensor is important.

We do not provide service, but we sell ring magnets, which are the heart of every speaker. Replacing a ferrite magnet with a neodymium one in a speaker allows for drastically reducing its weight and increasing efficiency, but requires precise coil centering.

A reed switch is a glass tube with contacts that close when a magnet is brought close. It is the simplest door/window opening sensor (alarm systems). A flat neodymium magnet glued to the window sash is enough for correct operation. It is a cheap and failure-free solution.

21. Codes, customs, and law

Commercial and legal data.

The code for permanent metal magnets is 8505 11 00.

The code is 26.80.99.0 (Other magnetic and optical media; other magnetic devices).

In Poland, the standard VAT rate of 23% applies.

Neodymium magnets contain rare earth metals. Do not throw them into mixed waste. It is best to take them to a PSZOK (Selective Collection Point for Municipal Waste) or a scrapyard.

22. Curiosities

Curiosities with neodymium magnets.

No. Magnesium (Mg) is a chemical element, a light metal, and a dietary supplement. A magnet is a physical object creating a magnetic field. Confusing these terms is a common linguistic error. In our store, you can buy neodymium magnets (for attracting), not magnesium (for drinking).

They were invented in 1984, independently by General Motors (USA) and Sumitomo (Japan), as a response to expensive samarium-cobalt magnets.

The strongest permanent magnet is neodymium in grade N52. Stronger are only superconducting electromagnets (used e.g. in MRI tomography).

In classical physics, no. Every magnet must have two poles: North (N) and South (S). Cutting a magnet in half creates two smaller magnets, each of which still has two poles.

Yes, old HDD drives contain very strong, arc-shaped neodymium magnets. They are a great free source of magnets for DIY enthusiasts. Downside: They are glued to metal backing plates, from which it is very difficult to detach them without damaging (cracking) the magnet. Additionally, they have an irregular shape, which makes them hard to use in precise projects.

23. Prices, buying, and metals market

Why do prices change and how to buy cheaper?

The price results from raw material costs. Neodymium (Nd) and Dysprosium (Dy) are rare earth metals. Their extraction is difficult, expensive, and monopolized by China. Magnet prices are directly linked to the stock market quotes of these elements. Additionally, the complicated sintering and processing of hard material increases the production cost.

Yes. As a direct importer, we serve factories and advertising agencies. For carton (bulk) or pallet orders, we offer individual discount thresholds. Contact our B2B department to receive a quote.

Buying from us, you receive goods that are tested and certified. Cheap magnets from Chinese auction portals often have inflated parameters (e.g., sold as N52, but really it's N35) or poor anti-corrosion coating. We take on the quality risk, customs duty, and VAT.

24. Storage and maintenance

How to care for magnets so they serve for years?

Always store magnets with spacers (plastic or wooden) between them. If two large magnets stick directly together, separating them may be impossible without specialized tools. Keep them away from moisture.

For small magnets, 10-20 cm is enough. For powerful handles (F300, F550), we recommend a minimum of 50 cm distance from laptops, hard drives, payment cards, and mechanical watches.

25. Myths: free energy and perpetual motion

Facts and myths about magnetic motors.

Many videos on the internet show 'free energy' from magnets. From the point of view of physics, this is not possible (conservation of energy principle). A magnet is not a battery – it is a source of a field, not energy. However, building prototypes and experimenting with Halbach arrays is a fascinating hobby, for which we supply top-quality magnets and bearings.

Magnetic fields are used in physiotherapy for tissue regeneration and pain relief. However, one should distinguish certified medical devices from home remedies. We sell magnets as technical elements, not medical devices, although many customers use them for magnetotherapy on their own responsibility.

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