Neodymium and other strong (Alnico and Cobalt) magnets must be handled with care to avoid personal injury and damage to the magnets. Fingers or other body parts can get severely pinched between two attracting magnets. Neodymium magnets are brittle and can peel, crack, or shatter if allowed to slam together. Eye protection should be worn when handling these magnets, because shattering magnets will cause high speed debris.
- When working with Neodymium magnets take care to protect your hands and fingers and handle the magnets with care. Two attracting magnets can severely pinch your fingers.
- Neodymium magnets can slam together with great force. As they are brittle in nature they can often peel, crack or shatter and send shards of magnets flying all over the place, so wearing eye protection is essential.
- Neodymium magnets have strong magnetic fields. If magnets are placed near magnetic media like computers, floppy disks, hard drives, credit cards, magnetic I.D. cards, cassette tapes and video tapes these magnets damage is likely to occur. High magnetic fields can also destroyed crystal oscillators causing electronic devices to stop functioning.
- Any kind of magnets should not be allowed near a person who uses medical aids like a pacemaker. The magnet can cause the medical aid to malfunction.
- Neodymium magnets are brittle and prone to cracking and chipping, they do not take well to machining (I recommend waterjet for cutting).
- Children should not be allowed to handle strong magnets.
Neodymium magnets will start to lose their magnetic properties above 175° F (80° C).
Neodymium, Alnico, and Cobalt magnets have many industrial, commercial, educational, and household uses but must be handled with extreme care.