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If you’ve ever struggled with screws that won’t stick to your driver bit or had a delicate watch act up because of stray magnetism, a magnetizer or demagnetizer might be the most underrated gadget you’ll add to your kit. These compact accessories do simple things—either add magnetic charge to a tool or remove it—but their impact on everyday projects is huge. You get fewer dropped fasteners, faster single-handed work, and safer handling around sensitive electronics. Think of them as tiny power-ups for your tools.
Cerqular is one of the brands you’ll see when hunting for magnetizers. They market small, pocket-friendly magnetizers that are perfect for hobbyists, homeowners, and light pros. If you prefer a no-frills, straightforward device that magnetizes screwdrivers, bits, and small metal tools, Cerqular models are worth checking out. They’re usually compact enough to toss in a drawer or your work belt and inexpensive compared with larger shop-grade units.
Cerqular magnetizers typically feature a small chamber or slot where you insert the tip of a screwdriver or bit, and a simple mechanism to switch between magnetizing and demagnetizing. Most are manual—no batteries, no cords—so they’re portable and always ready. The construction is often plastic with internal magnets, so while they aren’t indestructible, they’re light and practical for everyday use.
If you’re a DIYer who works around the house, a hobbyist assembling electronics or model kits, or someone who needs a quick fix for loose screws, a Cerqular magnetizer is a useful, affordable option. Pros who need heavy-duty performance on larger tools may want to look at stronger, industrial-grade units, but for the majority of home tasks, Cerqular does the job fine.
There are lots of places to buy magnetizers and demagnetizers in the United States, both online and in physical stores. Some retailers cater to DIYers and homeowners, while others target trade professionals. Below are reliable U.S. retailers where you can compare options, prices, and customer reviews before you buy.
Home Depot stocks a range of magnetizers and demagnetizers from basic pocket models to larger bench units. If you prefer in-person shopping, you can inspect build quality and get a feel for size in store; otherwise their online listings usually include helpful reviews and specifications. For many homeowners, Home Depot is a convenient one-stop shop for both tools and magnetizing accessories.
Lowe’s also carries small magnetizing tools and sometimes more specialized units for electricians and mechanics. The store often offers competitive pricing and occasional in-store promotions that make a small purchase like a magnetizer even more attractive. Lowe’s is a solid option if you like to compare different brands side-by-side.
If you’re looking for budget-friendly options, Harbor Freight frequently has very affordable magnetizers and demagnetizers. The build quality can vary, but for occasional use they’re a sensible pick. Harbor Freight often carries both handheld magnetizer/demagnetizer gadgets and larger devices aimed at garage use.
Ace Hardware is a great neighborhood option where staff often have hands-on experience with common home tools. Their stores carry compact magnetizers designed for consumer use, and you can usually find someone to offer quick tips on using them safely. Prices may be a bit higher than online discounters, but you get local convenience and personal service.
For more industrial or professional needs, Grainger and McMaster-Carr supply heavy-duty magnetizers and demagnetizers built for repetitive use in workshops. These units are sturdier, sometimes electrically powered, and designed to handle more substantial tools and frequent cycles. If you need longevity and stronger performance, these suppliers are worth a look.
Online marketplaces like Amazon and Walmart host a wide variety of magnetizers, from inexpensive handheld models to branded units for pros. The advantage here is selection—user reviews, fast shipping, and the ability to compare similar products at a glance. Just remember to check seller ratings and read multiple reviews to get a clear sense of real-world performance.
At the heart of both devices is magnetism. A magnetizer applies magnetic fields to the tip of a tool so it holds screws and small ferrous parts. Demagnetizers use either a reversing magnetic field or an electromagnetic coil to neutralize residual magnetism. Some tools combine both functions in a single housing with a simple switch or separate slots for magnetizing and demagnetizing.
When you insert a screwdriver or bit into a magnetizer, a magnetic field aligns the tiny magnetic domains inside the metal. Once aligned, the metal tip behaves like a magnet and can attract and hold small screws. This is especially handy for tasks that require one-handed work or reaching into tight spaces where your other hand can’t help hold the fastener.
Demagnetizing is equally important in certain contexts. Electronic repairs and precision instruments like watches or compasses can be disrupted by stray magnetism. Demagnetizers neutralize magnetic fields so tools won’t inadvertently damage sensitive parts or affect measurements. Pros in the watchmaking and electronics fields often demagnetize tools as part of regular maintenance.
Magnetizers and demagnetizers are surprisingly versatile. They’re not just for holding screws; they save time and reduce frustration in many scenarios. Here are a few common real-life uses where these accessories pay for themselves quickly.
For homeowners, magnetized screwdrivers make small repair jobs faster and less fiddly. Whether you’re installing a cabinet hinge, fixing light switch plates, or assembling flat-pack furniture, being able to pick up and hold screws on the tip of your driver can make a one-person job far simpler.
If you tinker with electronics or repair small gadgets, demagnetizing tools is crucial. Magnets can disturb delicate components, cause misreadings in electronic sensors, or attract tiny metal shavings. Watchmakers and audio technicians are especially careful about magnetism; a demagnetizer is a regular tool in their kit.
Mechanics often use magnetizers to make pick-up tools or screwdrivers more effective when working in tight engine bays where dropping a fastener can cost a trip to the hardware store. For outdoor tasks like assembling grills or lawn equipment, a magnetized bit helps with quick insertions in awkward spots.
Choosing the right unit comes down to expected use, tool size, and durability. Consider how frequently you’ll use it and what tools you’ll magnetize. A tiny plastic magnetizer might be fine for occasional household jobs, but if you’re in a workshop or do frequent electronics work, invest in a more robust or electrically-powered unit that offers consistent results.
Look at the range of bit sizes and tool shapes the device can handle. Some magnetizers are designed only for screwdriver bits and small drivers, while others can handle slightly larger chisel or hex tips. If you work with long drill bits or heavy sockets, you’ll need a larger bench model or magnetic fixtures that fit those tools.
Strength matters when you need to hold heavier fasteners or keep a screw attached while positioning hardware. Permanent magnet units are simple and reliable, but they can vary in strength. Electromagnetic units often provide stronger and adjustable fields, which can be beneficial for both magnetizing and demagnetizing different tool sizes.
If you toss the magnetizer in a toolbox or use it on the jobsite, choose a model built to withstand knocks, dust, and moisture. Metal housings or reinforced plastics last longer than thin, brittle shells. Higher quality units often cost more, but they’ll save you money in the long run because they won’t need frequent replacement.
Using these devices is straightforward, but a few tips make the process faster and safer. Whether you’re a total beginner or brushing up your skills, these steps will get you consistent results.
To magnetize, simply insert the tip into the magnetizer slot or hold it against the magnet block and follow the manufacturer’s instructions—usually a few seconds of contact is enough. If you want a stronger magnetized tip, repeat the process, aligning the tool the same way each time. Test by picking up a screw; if it holds securely, you’re done.
For demagnetizing, place the tool into the demagnetizer slot and slowly withdraw it while the device is active, or cycle it according to the instructions if it’s electric. The key is to create a gradual change in the magnetic field to avoid re-magnetizing the tool in the opposite direction. After the process, test the tool near a compass or a small electronic device to ensure magnetism has been removed.
Like any tool, magnetizers and demagnetizers require basic care and safe handling. They’re simple devices, but a little attention keeps them working reliably and prevents accidents around magnet-sensitive equipment.
Store magnetizers away from magnetic storage media like credit cards or hard drives to prevent erasure or damage. Keep them dry and free from heavy impacts. For electromagnetic units, follow the manufacturer’s guidance on cleaning and avoid exposing coils to water.
Use caution near electronics, pacemakers, compasses, and magnetic storage devices. Strong magnetic fields can affect readings, erase data, or interfere with medical implants. Always demagnetize tools before working on precision electronics or measurements that could be disrupted by stray magnetism.
Magnetizers and demagnetizers span a wide price spectrum. Smaller, passive plastic units can cost under $10, while sturdier bench-top electromagnets and combined units for professional shops can run well over $100. Choose a model that matches your frequency of use and the types of tools you handle. For just holding screws during furniture assembly or light repairs, a budget unit offers excellent value. For repetitive professional work, investing in a high-quality unit often pays off in durability and performance.
Magnetizers and demagnetizers are tiny investments that repay you with fewer dropped screws, quicker one-handed work, and safer handling of sensitive parts. Whether you pick up a compact Cerqular magnetizer for around the house or a tougher shop-grade demagnetizer for professional use, these accessories make routine tasks smoother and less frustrating. Once you try one, you’ll wonder how you managed without it.
| Magnetizers & Demagnetizers | Price | |
|---|---|---|
| Magnetizer | $ 10,- |
