It is difficult to produce a permanent magnet with a magnetic field of a specific pre-determined shape. Researchers used a 3D printer to make such a magnet. This allows magnets to be produced in complex forms and precisely customized magnetic fields, required, for example, in magnetic sensors.

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It is difficult to produce a permanent magnet with a magnetic field of a specific pre-determined shape. Researchers used a 3D printer to make such a magnet. This allows magnets to be produced in complex forms and precisely customized magnetic fields, required, for example, in magnetic sensors.