FAQ - Frequently Asked Questions

Why does the coating of my magnets chip?

To protect our neodymium magnets from corrosion, they have a thin coating of nickel copper nickel. This coating can crack or chip due to collision or strong pressure. Heavy blows can even break magnets. This is not a quality defect, but rather a typical product feature: The material neodymium iron boron is very magnetic but also brittle, because it is sintered from metal powders. Therefore, careful handling of magnets is recommended.
We also draw attention to this problem in our safety tips, which are enclosed in all your orders.
Chipped coating of cube magnets
Chipped coating of cube magnets

Tips on how to protect magnets

Customer application
Customer application Protection of big magnets
  • Avoid collisions between magnets and repeated mechanical pressure (e.g. blows).
  • Separate large magnets, especially magnetic spheres, from one another with a piece of cardboard.
  • Store magnets separately, ideally on a thick iron board (see project Board for magnet storage).
  • Make your own protective cover for large magnets (see project Protection of big magnets)
  • Use coated neodymium magnets, if light blows are not avoidable.