You Can 3D Print Yourself Some Simple Magnetic Switches
Permanent magnets are typically always magnetic, which makes turning them off challenging. However, Andrew Klein has created a clever design that uses a specific arrangement of magnets to effectively switch the magnetic field on and off. This is achieved with a 3D-printed magnetic switch, allowing control over the magnetism without any external power source.
The concept behind Klein’s design is straightforward. It involves a 3D-printed housing composed of two parts, holding two arrays of magnets. In one orientation, the magnets are arranged in opposite directions, which cancels out their magnetic fields, making the assembly behave as if it isn’t magnetic. By rotating the housing, the magnets align, combining their magnetic fields to act as a strong, unified magnet.
This kind of switchable magnet is incredibly useful for applications where magnetic clamps or fixtures are needed. It allows for easy attachment and detachment from ferrous surfaces. Turning the magnet “off” with a simple rotation is much more practical than trying to pry a strong magnet away from a metal surface. Klein’s design offers an innovative solution for those needing controllable magnetism in their projects.
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