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MW 5x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010084

GTIN/EAN: 5906301810834

5.00
Load capacity 0.48 kg / 4.68 N Magnetic Induction 610.03 mT / 6100 Gs
Diameter Ø
5 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
2.21 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical details »

0.900 zł net / pcs

1.107 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Product card - MW 5x15 / N38 - cylindrical magnet

Specification / characteristics - MW 5x15 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010084
GTIN/EAN 5906301810834
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 5 mm [±0,1 mm]
Height 15 mm [±0,1 mm]
Weight 2.21 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.48 kg / 4.68 N
Magnetic Induction ~ ? 610.03 mT / 6100 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x15 / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Technical analysis of the assembly - technical parameters

These data are the result of a physical analysis. Results are based on models for the class Nd2Fe14B. Actual parameters may differ from theoretical values. Use these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs distance) - characteristics
MW 5x15 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6091 Gs
609.1 mT
 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
 low risk
1 mm 3823 Gs
382.3 mT
 0.19 kg / 0.42 LBS
189.1 g / 1.9 N
 low risk
2 mm 2261 Gs
226.1 mT
 0.07 kg / 0.15 LBS
66.1 g / 0.6 N
 low risk
3 mm 1378 Gs
137.8 mT
 0.02 kg / 0.05 LBS
24.6 g / 0.2 N
 low risk
5 mm 607 Gs
60.7 mT
 0.00 kg / 0.01 LBS
4.8 g / 0.0 N
 low risk
10 mm 154 Gs
15.4 mT
 0.00 kg / 0.00 LBS
0.3 g / 0.0 N
 low risk
15 mm 63 Gs
6.3 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 low risk
20 mm 32 Gs
3.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
30 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
50 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
Grip strength decreases significantly with every mm of distance. Keep in mind that even a very thin break (e.g., dirt, varnish, dust) significantly diminishes the holding power. Magnetic products hold most effectively in perfect adhesion; gap kills the force. Analyze how quickly the parameters drop, when the magnet does not touch flatly to the steel surface. When designing the assembly, discard unnecessary gaps.

Table 2: Slippage force (wall)
MW 5x15 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.10 kg / 0.21 LBS
96.0 g / 0.9 N
1 mm Stal (~0.2) 0.04 kg / 0.08 LBS
38.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 LBS
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
This section calculates the theoretical weight limit necessary to cause the slippage of the magnet vertically against a upright metal surface (considering standard friction). This value is relative to the distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 5x15 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.14 kg / 0.32 LBS
144.0 g / 1.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.10 kg / 0.21 LBS
96.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.05 kg / 0.11 LBS
48.0 g / 0.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.24 kg / 0.53 LBS
240.0 g / 2.4 N
When mounting a magnet on a upright surface (e.g., a car body), it you can count on barely about 1/5 of its maximum pull force. Gravity and a low friction coefficient cause that magnets move down faster than they detach. Planning a vertical fastening? Note that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the magnet will give way down under a much lighter cargo. Utilizing a rubberized layer can significantly improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MW 5x15 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.05 kg / 0.11 LBS
48.0 g / 0.5 N
1 mm
25%
 0.12 kg / 0.26 LBS
120.0 g / 1.2 N
2 mm
50%
 0.24 kg / 0.53 LBS
240.0 g / 2.4 N
3 mm
75%
 0.36 kg / 0.79 LBS
360.0 g / 3.5 N
5 mm
100%
 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
10 mm
100%
 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
11 mm
100%
 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
12 mm
100%
 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
A thin sheet is not enough to conduct the entire magnetic field, which squanders power of the holder. If you install a neodymium to a thin surface, the magnetism will pass right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's power, you require a sufficiently solid backing of steel. The saturation effect means that on sheet metal structures (e.g., appliance housings), the magnet works worse. We advise picking the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - power drop
MW 5x15 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
 OK
40 °C -2.2% 0.47 kg / 1.03 LBS
469.4 g / 4.6 N
 OK
60 °C -4.4% 0.46 kg / 1.01 LBS
458.9 g / 4.5 N
 OK
80 °C -6.6% 0.45 kg / 0.99 LBS
448.3 g / 4.4 N
100 °C -28.8% 0.34 kg / 0.75 LBS
341.8 g / 3.4 N
Classic neodymiums lose parameters past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly damage this magnet. As the temperature rises, the neodymium's power momentarily drops. Do not use this magnet close to heaters exceeding its working range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.
*Important note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Thin magnets (pancake types) may lose charge permanently sooner than taller cylinders. Red status in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 5x15 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.49 kg / 9.90 LBS
6 154 Gs
0.67 kg / 1.49 LBS
674 g / 6.6 N
 N/A
1 mm 2.91 kg / 6.42 LBS
9 810 Gs
0.44 kg / 0.96 LBS
437 g / 4.3 N
 2.62 kg / 5.78 LBS
~0 Gs
2 mm 1.77 kg / 3.90 LBS
7 646 Gs
0.27 kg / 0.59 LBS
265 g / 2.6 N
 1.59 kg / 3.51 LBS
~0 Gs
3 mm 1.05 kg / 2.31 LBS
5 880 Gs
0.16 kg / 0.35 LBS
157 g / 1.5 N
 0.94 kg / 2.08 LBS
~0 Gs
5 mm 0.37 kg / 0.82 LBS
3 507 Gs
0.06 kg / 0.12 LBS
56 g / 0.5 N
 0.34 kg / 0.74 LBS
~0 Gs
10 mm 0.04 kg / 0.10 LBS
1 213 Gs
0.01 kg / 0.01 LBS
7 g / 0.1 N
 0.04 kg / 0.09 LBS
~0 Gs
20 mm 0.00 kg / 0.01 LBS
309 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
37 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
24 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
16 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
11 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
8 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
6 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two strong neodymiums attract each other from a much further distance than a magnet and steel combination. The setup of magnet-to-magnet generates a stronger field and a wider radius of operation. Planning to create a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still significant.
*Flux density for N-N configuration drops to ~0 Gs at the midpoint of the gap (due to field cancellation).
Note: Estimates apply to friction force of dual same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MW 5x15 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Remote 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field is a real danger to IT equipment as well as pacemakers. These magnets generate a field that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and glass. Special caution must be taken by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 5x15 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 7.65 km/h
(2.13 m/s)
 0.00 J
30 mm 7.66 km/h
(2.13 m/s)
 0.01 J
50 mm 7.66 km/h
(2.13 m/s)
 0.01 J
100 mm 7.66 km/h
(2.13 m/s)
 0.01 J
Neodymium magnets are very brittle – a strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Corrosion resistance
MW 5x15 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 5x15 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 382 Mx 13.8 µWb
Pc Coefficient 1.38 High (Stable)
Total magnetic flux emitted by the pole surface. Essential parameter when building generators as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 5x15 / N38

Environment Effective steel pull Effect
Air (land) 0.48 kg Standard
Water (riverbed) 0.55 kg
(+0.07 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

*For N38 grade, the safety limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.38

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Elemental analysis

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010084-2026
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This product is an exceptionally strong cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø5x15 mm, guarantees maximum efficiency. The MW 5x15 / N38 component boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.48 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 4.68 N with a weight of only 2.21 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 5.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø5x15), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø5x15 mm, which, at a weight of 2.21 g, makes it an element with impressive magnetic energy density. The value of 4.68 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2.21 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 15 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They retain magnetic properties for around ten years – the drop is just ~1% (based on simulations),
  • They maintain their magnetic properties even under external field action,
  • A magnet with a smooth nickel surface has better aesthetics,
  • Neodymium magnets achieve maximum magnetic induction on a small area, which increases force concentration,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in forming and the ability to modify to complex applications,
  • Fundamental importance in modern industrial fields – they find application in data components, motor assemblies, diagnostic systems, also other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of producing nuts in the magnet and complex forms - recommended is cover - magnetic holder.
  • Health risk resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to complicate diagnosis medical after entering the body.
  • With mass production the cost of neodymium magnets is a challenge,

Lifting parameters

Detachment force of the magnet in optimal conditions – what affects it?

The load parameter shown refers to the maximum value, obtained under laboratory conditions, specifically:
  • with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with an ground contact surface
  • with total lack of distance (no coatings)
  • for force acting at a right angle (in the magnet axis)
  • at temperature room level

Determinants of practical lifting force of a magnet

In practice, the actual lifting capacity results from several key aspects, listed from crucial:
  • Gap (between the magnet and the plate), because even a very small distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
  • Thermal environment – heating the magnet causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Precautions when working with neodymium magnets
Maximum temperature

Avoid heat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Warning for heart patients

For implant holders: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Allergic reactions

Certain individuals experience a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact might lead to skin redness. We recommend wear safety gloves.

Beware of splinters

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Combustion hazard

Dust produced during grinding of magnets is combustible. Do not drill into magnets unless you are an expert.

Magnetic media

Powerful magnetic fields can erase data on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.

Keep away from children

Always store magnets out of reach of children. Choking hazard is significant, and the effects of magnets clamping inside the body are tragic.

Immense force

Before starting, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

GPS and phone interference

Navigation devices and mobile phones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Hand protection

Protect your hands. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Security! Details about risks in the article: Safety of working with magnets.