Neodymium magnets with steel pot are designed for gluing in. The ingenious thing about them: The steel pot protects the neodymium magnets from damage and increases the magnetic force in the open direction. This means that a stronger force is achieved with the "same" magnet size compared to a conventional neodymium disc magnet. These magnets are very popular in furniture construction, especially among carpenters.
A neodymium disc magnet is installed in a steel pot in this pot magnet. This leads to a change in the magnetic field, which significantly increases the adhesive force when the magnet is placed directly on a ferromagnetic material (e.g. iron). Compared to a conventional neodymium disc magnet, the holding force is significantly increased in this case. In addition, the built-in neodymium magnet is protected against impacts and therefore has a longer service life.
Important: Pot magnets only "unfold" their full adhesive force when in direct and complete contact with the counterpart. Even at a small distance from the ferromagnetic material, the adhesive force is significantly reduced. Neodymium disc magnets are generally better suited for a greater distance to the counterpart, as they can bridge a greater distance.