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Neodymium magnet size is limited by brittleness, manufacturing constraints, and heat sensitivity, making very large magnets rare and difficult to produce.

A magnetic field is an invisible area around magnets or electric currents where magnetic forces act, essential for technology and Earth's protection.

Magnets affect credit cards only if they're very strong; most wallet magnets won't harm your card's magnetic stripe or chip.

Not all stainless steel fridges are magnetic. Magnetism depends on the stainless steel type—430 is magnetic, while 304 is usually not.

Check for a silver coating, strong pull, and markings to tell if a magnet is neodymium. Use simple tests to identify neodymium magnets at home.

316 stainless steel is generally non-magnetic due to its austenitic structure, but cold working or welding can introduce slight magnetism.

Are whiteboards magnetic? Only boards with steel or porcelain surfaces are magnetic; melamine or laminate boards cannot hold magnets.

Buy strong magnets from trusted online retailers or local hardware stores. Compare options, prices, and magnet types to find the best fit for your project.

Magnets contain rare earth elements like neodymium, samarium, dysprosium, and terbium for strong magnetic properties.