1. Strong attraction can cause serious harm.
Neodymium magnets are more powerful than other types of magnets. The incredibly powerful force between magnets often surprises those unfamiliar with their power. Fingers and other body parts can be sandwiched between the two magnets. With larger magnets, this type of injury can be serious.
2. Neodymium magnets are not suitable for children.
Neodymium magnets are not toys. Neodymium magnets should not be exposed to children. Small magnets may pose a choking hazard. If multiple magnets are swallowed, they can connect to each other through the intestinal wall. This can cause serious health risks and, if diagnosed correctly, require immediate emergency surgery.
3. Neodymium magnets will affect pacemakers.
Strong magnetic fields near neodymium magnets can affect pacemakers, ICDs, and other implantable medical devices. Many of these devices can deactivate them via magnetic fields. Therefore, care must be taken to avoid inadvertent deactivation of such devices.
4. Neodymium magnets are fragile and fragile.
Neodymium magnets are made of hard and brittle material. Although they are made of metal and their nickel plating gives them a shiny metallic appearance, they are not as durable as steel. Neodymium magnets may peel, chip, crack or shatter if allowed to be knocked together. Wear protective goggles when handling magnets, as broken magnets can eject small pieces at extremely high speeds. Neodymium magnets are not easy to drill or machine.
5. Magnets will affect magnetic media.
Strong magnetic fields near neodymium magnets can damage magnetic media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other such devices. They can also damage televisions, VCRs, computer monitors and CRT monitors. Avoid placing neodymium magnets near electronic equipment.
6. Neodymium magnets will demagnetize at high temperatures.
While the operating temperature is typically listed as 80°C (175°F), the actual maximum operating temperature of a magnet may vary depending on grade, magnet shape, and how it is used