【3D Printing】Magnetic Switch: A Simple Solution for Switchable Permanent Magnets
Permanent magnets are generally considered to be non-switchable.
However, manufacturer Andrew Klein has developed an ingenious method to circumvent this principle.
He used 3D printing technology to create a magnetic switch that can effectively turn permanent magnets on and off.
Permanent Magnets
A permanent magnet refers to a magnet that can maintain its magnetism for a long time, which is the general magnet used in daily life.
Examples include natural magnets (magnetite) and artificial magnets (such as Alnico, an alloy of iron with aluminum, nickel, and cobalt).
Besides permanent magnets, there are also electromagnets that only have magnetism when energized. Permanent magnets are also called hard magnets; they do not easily lose magnetism nor are they easily magnetized.
Switchable Magnetic Switch
This concept is based on a two-part 3D printed bracket. In one orientation, the design places two magnetic arrays in opposite directions.
The result is that the magnetic fields cancel each other out, and the component is effectively non-magnetic.
If they are rotated to another position, the magnetic poles align in the same way. This causes the magnetic field to amplify, so the device acts like a single strong magnet.
Magnetic Field Cancellation: In the "off" state of the magnetic switch, the magnetic fields of the two magnet arrays cancel each other out, making the overall effect close to non-magnetic. In this way, the magnetic field is "off," and the device will not adhere to ferromagnetic surfaces.
Magnetic Field Amplification: When the device is rotated to the "on" position, the magnetic fields of the two magnets align, causing the magnetic field to amplify. In this way, the magnetic switch acts like a strong magnet, effectively adhering to ferromagnetic surfaces.
Applications of Magnetic Switches
Andrew Klein's magnetic switch design is an exciting innovation! By utilizing 3D printing technology, he successfully broke through the limitation that traditional permanent magnets cannot be "switched."
The key to this design lies in the clever arrangement and rotation of the two-part bracket, allowing the magnetic field to be effectively controlled and switched.
This type of magnetic switch has a wide range of applications, especially in magnetic clamps and fixtures that require frequent disassembly or adjustment.
For example, in industrial production lines, mechanical maintenance, or even DIY home projects, this magnetic switch can be used to simplify operations.
For makers interested in this concept, Andrew Klein provides 3D printable files and a detailed explanation of the development process, which is an excellent resource.
This not only helps them implement similar magnetic switch designs but also inspires more innovative ideas and explores other magnetic device applications and improvements.
Klein offers the 3D printable files online for $5 and explains his development process in the video.
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3DMart offers more than just 3D printing, we provide three major OEM services:「3D Printing Service」、「3D Scanning Service」、「360° Surround 3D Scanning Service」!!
Follow our fan page to stay updated:
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