Magnetizer and Demagnetizer: A Quick Guide
Magnetizer and demagnetizer are devices used to manipulate the magnetic properties of materials.
Magnetizer
Function: It imparts a magnetic field to a material, causing it to become magnetic.
How it works: Typically, a magnetizer uses an electromagnet, which is a coil of wire carrying an electric current. When the current flows, it creates a magnetic field around the coil. If a material is placed within this field, it can acquire magnetic properties.
Demagnetizer
Function: It removes or reduces the magnetic field of a material.
How it works: A demagnetizer often works by subjecting the material to a rapidly alternating magnetic field. This field gradually reduces the material’s magnetic strength until it is essentially demagnetized.
Common Applications
Tools and equipment: Magnetizers and demagnetizers are used to magnetize or demagnetize tools like screwdrivers, pliers, and wrenches, which can improve their grip or prevent unwanted magnetic attraction.
Magnetic recording media: In the past, magnetizers were used to record data onto magnetic tapes and disks. Demagnetizers were used to erase data from these media.
Industrial processes: These devices have various industrial applications, such as sorting magnetic materials, inspecting for defects in magnetic components, and treating magnetic fields in electronic equipment.
01. Best Overall: Klein Demagnetizer / Magnetizer for Screwdriver Bits and Tips
4.7 out of 5 Ratings
Dropping screws on the job can kill your productivity. Always have a magnetic screwdriver handy with Klein Tools’ Mag2 Magnetizer/Demagnetizer. Quickly and easily magnetizes your screwdrivers and bits to hold your fasteners on the tip of your screwdriver and get the job done fast. This compact tool is great to have on hand when you need a magnetized screwdriver or bit. Powerful rare-earth magnets provide a fast, strong, long lasting charge. Easily attach it to your tool bag with the included stainless steel key ring. Once you have one, you’ll wonder what you ever did without it.
02. Best Premium Pick: Wiha Magnetizer Demagnetizer
4.5 out of 5 Ratings
Wiha 40010 magnetize or demagnetize steel screwdriver blades, tweezers and similar tools. Box high quality plastic, shock resistant, green and cadmium free. Magnetize screw drivers, tweezers, tool bits and other steel objects as needed. When your work is finished, use the demagnetizer to remove the magnetic field. Also useful for demagnetizing tools before use on magnetically sensitive surfaces; i.e. for electronic work.
03. Best Value Pick: Bit Magnetizer Ring and Demagnetizer
4. out of 5 Ratings
3-IN-1 Functionality
Not only does this act as a magnetizer and demagnetizer; you can also use it as a screwdriver bit holder to keep your fasteners straight every time. Stay Magnetized Longer. The powerful rare earth magnet keeps the magnetism on your bits longer than regular magnetizers. Simple and compact design allows you to magnetize and demagnetize all of your bits on the go with only one swipe.
04. Editor’s Pick: Wera Tools 9500 Magnetiser SB 48 mm
4.4 out of 5 Ratings
05. Best Popular Pick: MBX Magnetizer Demagnetizer for Screwdriver Tips
4.4 out of 5 Ratings
Instantly magnetize or demagnetize steel tools and other small ferrous parts. Converts any tool blade to a magnetic retriever of screws, nuts and metallic particles. No batteries or electricity required. Minimize loss of screws. Lifetime replacement warranty.
