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MPL 40x20x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020158

GTIN/EAN: 5906301811640

length

40 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

60 g

Magnetization Direction

↑ axial

Load capacity

24.62 kg / 241.53 N

Magnetic Induction

349.60 mT / 3496 Gs

Coating

[NiCuNi] Nickel

product parameters »

31.00 ZŁ with VAT / pcs + price for transport

25.20 ZŁ net + 23% VAT / pcs

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Technical specification - MPL 40x20x10 / N38 - lamellar magnet

Specification / characteristics - MPL 40x20x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020158
GTIN/EAN 5906301811640
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 40 mm [±0,1 mm]
Width 20 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 60 g
Magnetization Direction ↑ axial
Load capacity ~ ? 24.62 kg / 241.53 N
Magnetic Induction ~ ? 349.60 mT / 3496 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x20x10 / N38 - lamellar magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. 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 312 - 380 °C
Curie Temperature TF 593 - 716 °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 simulation of the assembly - report

The following information are the outcome of a mathematical simulation. Values rely on models for the material Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Use these calculations as a supplementary guide for designers.

Table 1: Static force (force vs gap) - characteristics
MPL 40x20x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3495 Gs
349.5 mT
 24.62 kg / 54.28 LBS
24620.0 g / 241.5 N
 crushing
1 mm 3272 Gs
327.2 mT
 21.58 kg / 47.57 LBS
21578.0 g / 211.7 N
 crushing
2 mm 3035 Gs
303.5 mT
 18.56 kg / 40.92 LBS
18559.3 g / 182.1 N
 crushing
3 mm 2794 Gs
279.4 mT
 15.73 kg / 34.69 LBS
15733.0 g / 154.3 N
 crushing
5 mm 2332 Gs
233.2 mT
 10.96 kg / 24.16 LBS
10959.2 g / 107.5 N
 crushing
10 mm 1433 Gs
143.3 mT
 4.14 kg / 9.12 LBS
4136.4 g / 40.6 N
 warning
15 mm 891 Gs
89.1 mT
 1.60 kg / 3.52 LBS
1598.7 g / 15.7 N
 weak grip
20 mm 574 Gs
57.4 mT
 0.66 kg / 1.46 LBS
664.0 g / 6.5 N
 weak grip
30 mm 267 Gs
26.7 mT
 0.14 kg / 0.32 LBS
143.7 g / 1.4 N
 weak grip
50 mm 82 Gs
8.2 mT
 0.01 kg / 0.03 LBS
13.7 g / 0.1 N
 weak grip
Pulling power decreases significantly per each millimeter of distance. Note that even the smallest gap (e.g., dirt, paint, dust) significantly diminishes the holding power. Neodymiums hold most effectively in perfect adhesion; distance nullifies the power. Notice how quickly the pull force plummet, when the magnet does not adhere directly to the steel surface. When calculating the mounting, avoid redundant distances.

Table 2: Sliding load (vertical surface)
MPL 40x20x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 4.92 kg / 10.86 LBS
4924.0 g / 48.3 N
1 mm Stal (~0.2) 4.32 kg / 9.52 LBS
4316.0 g / 42.3 N
2 mm Stal (~0.2) 3.71 kg / 8.18 LBS
3712.0 g / 36.4 N
3 mm Stal (~0.2) 3.15 kg / 6.94 LBS
3146.0 g / 30.9 N
5 mm Stal (~0.2) 2.19 kg / 4.83 LBS
2192.0 g / 21.5 N
10 mm Stal (~0.2) 0.83 kg / 1.83 LBS
828.0 g / 8.1 N
15 mm Stal (~0.2) 0.32 kg / 0.71 LBS
320.0 g / 3.1 N
20 mm Stal (~0.2) 0.13 kg / 0.29 LBS
132.0 g / 1.3 N
30 mm Stal (~0.2) 0.03 kg / 0.06 LBS
28.0 g / 0.3 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
The following data calculates the approximate force sufficient to initiate the sliding of the magnet vertically along a upright steel wall (considering standard friction). This parameter varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 40x20x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
7.39 kg / 16.28 LBS
7386.0 g / 72.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
4.92 kg / 10.86 LBS
4924.0 g / 48.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.46 kg / 5.43 LBS
2462.0 g / 24.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
12.31 kg / 27.14 LBS
12310.0 g / 120.8 N
When hanging a holder on a upright surface (e.g., a car body), it you can count on barely approx. 1/5 of its maximum pull force. Gravitational force and a low friction coefficient influence the fact that products slip easier than they pop off the substrate. Planning a wall mount? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a significantly smaller load. Application of an anti-slip layer can significantly increase the grip.

Table 4: Steel thickness (saturation) - power losses
MPL 40x20x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 1.23 kg / 2.71 LBS
1231.0 g / 12.1 N
1 mm
13%
 3.08 kg / 6.78 LBS
3077.5 g / 30.2 N
2 mm
25%
 6.16 kg / 13.57 LBS
6155.0 g / 60.4 N
3 mm
38%
 9.23 kg / 20.35 LBS
9232.5 g / 90.6 N
5 mm
63%
 15.39 kg / 33.92 LBS
15387.5 g / 151.0 N
10 mm
100%
 24.62 kg / 54.28 LBS
24620.0 g / 241.5 N
11 mm
100%
 24.62 kg / 54.28 LBS
24620.0 g / 241.5 N
12 mm
100%
 24.62 kg / 54.28 LBS
24620.0 g / 241.5 N
A too thin steel is not enough to absorb the entire magnetic field, which weakens actual performance of the magnet. If you attach a powerful product to a weak sheet, the flux will pass right through and the pull force will drop sharply. To squeeze 100% of this magnet's power, you require a sufficiently solid piece of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the holder shows lower pull force. We recommend selecting the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x20x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 24.62 kg / 54.28 LBS
24620.0 g / 241.5 N
 OK
40 °C -2.2% 24.08 kg / 53.08 LBS
24078.4 g / 236.2 N
 OK
60 °C -4.4% 23.54 kg / 51.89 LBS
23536.7 g / 230.9 N
80 °C -6.6% 23.00 kg / 50.70 LBS
22995.1 g / 225.6 N
100 °C -28.8% 17.53 kg / 38.65 LBS
17529.4 g / 172.0 N
Classic neodymiums irreversibly lose parameters after exceeding the maximum temperature. Avoid high temperatures – high temperature can permanently damage this magnet. With every degree above norm, the magnet's capacity briefly lowers. Avoid using this product in hot environments exceeding its working range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.
*Engineering note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low Pc) risk losing magnetic properties under lower heat stress than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 40x20x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 60.25 kg / 132.83 LBS
4 926 Gs
9.04 kg / 19.93 LBS
9038 g / 88.7 N
 N/A
1 mm 56.58 kg / 124.73 LBS
6 774 Gs
8.49 kg / 18.71 LBS
8487 g / 83.3 N
 50.92 kg / 112.26 LBS
~0 Gs
2 mm 52.81 kg / 116.42 LBS
6 544 Gs
7.92 kg / 17.46 LBS
7921 g / 77.7 N
 47.53 kg / 104.78 LBS
~0 Gs
3 mm 49.07 kg / 108.19 LBS
6 309 Gs
7.36 kg / 16.23 LBS
7361 g / 72.2 N
 44.17 kg / 97.37 LBS
~0 Gs
5 mm 41.89 kg / 92.34 LBS
5 828 Gs
6.28 kg / 13.85 LBS
6283 g / 61.6 N
 37.70 kg / 83.11 LBS
~0 Gs
10 mm 26.82 kg / 59.13 LBS
4 664 Gs
4.02 kg / 8.87 LBS
4023 g / 39.5 N
 24.14 kg / 53.22 LBS
~0 Gs
20 mm 10.12 kg / 22.32 LBS
2 865 Gs
1.52 kg / 3.35 LBS
1518 g / 14.9 N
 9.11 kg / 20.09 LBS
~0 Gs
50 mm 0.73 kg / 1.61 LBS
769 Gs
0.11 kg / 0.24 LBS
109 g / 1.1 N
 0.66 kg / 1.45 LBS
~0 Gs
60 mm 0.35 kg / 0.78 LBS
534 Gs
0.05 kg / 0.12 LBS
53 g / 0.5 N
 0.32 kg / 0.70 LBS
~0 Gs
70 mm 0.18 kg / 0.40 LBS
383 Gs
0.03 kg / 0.06 LBS
27 g / 0.3 N
 0.16 kg / 0.36 LBS
~0 Gs
80 mm 0.10 kg / 0.22 LBS
282 Gs
0.01 kg / 0.03 LBS
15 g / 0.1 N
 0.09 kg / 0.20 LBS
~0 Gs
90 mm 0.06 kg / 0.12 LBS
214 Gs
0.01 kg / 0.02 LBS
8 g / 0.1 N
 0.05 kg / 0.11 LBS
~0 Gs
100 mm 0.03 kg / 0.07 LBS
165 Gs
0.01 kg / 0.01 LBS
5 g / 0.0 N
 0.03 kg / 0.07 LBS
~0 Gs
Two magnets attract each other from a significantly greater distance than a neodymium and metal combination. The connection of two magnets generates a stronger field and a wider radius of operation. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the impact force is massive. The repulsion force is marginally weaker than the attraction, but still significant.
*Flux density between like poles drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Note: Results refer to shear force of dual matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MPL 40x20x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 14.5 cm
Hearing aid 10 Gs (1.0 mT) 11.5 cm
Mechanical watch 20 Gs (2.0 mT) 9.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 7.0 cm
Car key 50 Gs (5.0 mT) 6.5 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
Extremely neodym field poses a serious hazard to electronic devices and medical implants. These neodymiums produce a field that destroys function of digital equipment. Notice: the invisible magnetic field passes through tissues and glass. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MPL 40x20x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.47 km/h
(6.24 m/s)
 1.17 J
30 mm 35.51 km/h
(9.86 m/s)
 2.92 J
50 mm 45.70 km/h
(12.69 m/s)
 4.83 J
100 mm 64.60 km/h
(17.95 m/s)
 9.66 J
Magnetic elements are prone to chipping – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can destroy the magnet or painful pinches to fingers. Be sure to control the product during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
MPL 40x20x10 / 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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MPL 40x20x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 28 125 Mx 281.2 µWb
Pc Coefficient 0.42 Low (Flat)
Total magnetic flux passing through the pole surface. Essential parameter in coil applications as well as sensors. The Pc coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 40x20x10 / N38

Environment Effective steel pull Effect
Air (land) 24.62 kg Standard
Water (riverbed) 28.19 kg
(+3.57 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.
1. Shear force

*Caution: On a vertical surface, the magnet holds only approx. 20-30% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Power loss vs temp

*For N38 material, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.42

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.

Technical specification and ecology
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%
Ecology and recycling (GPSR)
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: 020158-2026
Quick Unit Converter
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This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x20x10 mm and a weight of 60 g, guarantees premium class connection. This magnetic block with a force of 241.53 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 40x20x10 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 24.62 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 40x20x10 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 40x20x10 / N38 model is magnetized through the thickness (dimension 10 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (40x20 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 40x20x10 mm, which, at a weight of 60 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 40x20x10 mm and a self-weight of 60 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of rare earth magnets.

Strengths

Besides their tremendous field intensity, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
  • They feature excellent resistance to magnetism drop due to opposing magnetic fields,
  • Thanks to the shiny finish, the plating of nickel, gold, or silver gives an aesthetic appearance,
  • They are known for high magnetic induction at the operating surface, which increases their power,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures approaching 230°C and above...
  • Due to the ability of free forming and adaptation to unique needs, NdFeB magnets can be created in a broad palette of geometric configurations, which makes them more universal,
  • Versatile presence in modern industrial fields – they find application in computer drives, drive modules, medical equipment, as well as multitasking production systems.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Weaknesses

Drawbacks and weaknesses of neodymium magnets and ways of using them
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using a housing - magnetic holder.
  • Health risk to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these devices are able to complicate diagnosis medical after entering the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Pull force analysis

Maximum holding power of the magnet – what affects it?

Breakaway force was defined for the most favorable conditions, including:
  • on a base made of structural steel, perfectly concentrating the magnetic field
  • with a thickness of at least 10 mm
  • with an ground contact surface
  • under conditions of no distance (surface-to-surface)
  • for force acting at a right angle (pull-off, not shear)
  • at room temperature

Magnet lifting force in use – key factors

In practice, the real power depends on several key aspects, presented from most significant:
  • Air gap (between the magnet and the metal), as even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, rust or dirt).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Thermal environment – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Safety rules for work with neodymium magnets
Crushing force

Watch your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Nickel allergy

A percentage of the population suffer from a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Extended handling might lead to a rash. We suggest wear protective gloves.

Do not underestimate power

Handle magnets with awareness. Their immense force can shock even professionals. Stay alert and do not underestimate their power.

No play value

These products are not intended for children. Accidental ingestion of several magnets can lead to them attracting across intestines, which constitutes a severe health hazard and necessitates immediate surgery.

Operating temperature

Regular neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Eye protection

Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets leads to them cracking into small pieces.

Danger to pacemakers

Medical warning: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

GPS and phone interference

Be aware: neodymium magnets generate a field that interferes with precision electronics. Maintain a safe distance from your phone, tablet, and navigation systems.

Data carriers

Very strong magnetic fields can destroy records on credit cards, HDDs, and storage devices. Stay away of at least 10 cm.

Do not drill into magnets

Dust generated during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.

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