If you’ve ever spent time playing with cube magnets—those tiny, neodymium-powered cubes that stick with a satisfying, unshakable force—chances are you’ve wondered if that strength can be harnessed for something more than just fidgeting or building random shapes. As a cube magnet supplier who’s worked with these little blocks for years, I get that curiosity: customers often ask if they can use them to create a stable magnetic force field for small objects, whether to hold a craft in place during a project, display a collectible without visible hardware, or even make a small, functional tech accessory. The short answer is yes—you just have to do it right, balancing science, safety, and practicality to avoid frustration (or pinched fingers, trust me, I’ve had enough of those to know better). Cube Magnets
First, let’s break down what a magnetic force field actually is, for anyone who hasn’t dug too deep into high school physics. In simple terms, it’s the invisible area around a magnet where its force is strong enough to pull on or repel magnetic materials (like iron, nickel, or steel). Neodymium cube magnets—our top-selling product line—are some of the strongest permanent magnets you can get for their size, which makes them perfect for this task. But here’s the catch: unlike a bar magnet, whose field is mostly north on one end and south on the other, cube magnets have poles on their flat faces, so arranging them changes how that field spreads. That’s the trick to making a stable, usable “field” that can hold a small object where you want it.
Before we get to the step-by-step, let’s talk basics. First, pick the right cube magnet size and grade. Most of our customers start with 5mm or 10mm neodymium cubes for small projects, but grade matters a lot. Grade N35 is standard, reliable, and not so strong that it’s dangerous for casual use (though still keep away from pacemakers, kids under 3, and electronics—important safety note). If you need a stronger pull for a heavier small object, go for N42, but always match the size to the weight of what you’re holding: a 5mm N35 cube holds about 100g, so don’t try to hang a 500g trinket with just one. Also, decide if you want a pull field (where the magnet attracts your object) or a repulsion field (where it pushes the object to stay in place without touching). Most small projects use pull fields, but repulsion is great for things like floating displays if you get the alignment right.
Now, let’s get to building your magnetic force field. I’ve tested dozens of arrangements over the years for customers, and the most reliable setup for small objects is a grid or adjacent-pole arrangement, not stacking cubes randomly. Let’s start with the simplest version for beginners: a small holding field for a craft piece or a photo display.
Step 1: Plan your base. Your base is what will hold the cubes that create the field. It can be a piece of wood, acrylic, plastic, even a cardboard box lined with steel (we sell thin steel sheets that work perfectly for this, too). The base doesn’t have to be big—for a small object like a 2-inch clay figure or a 3-inch photo, a 4×4 inch base is ideal. Drill or cut small notches in the base to fit your cube magnets, so they don’t shift. This is key because if a cube slides, it can repel another and mess up the entire field.
Step 2: Arrange the cubes for a uniform pull field. This is the part that makes or breaks the project. When you place cube magnets next to each other, opposite poles attract, like poles repel. To create a consistent, flat field across the base, arrange the cubes so every adjacent cube has opposite poles touching. Let me explain: pick one corner cube, mark its north face (if you can’t tell, bring a small compass near it—if the needle points toward the cube, that’s the south face, and the opposite is north). Place that corner cube north-face-up on your base. Next to it, put a cube so its south face touches the first cube’s north face—this makes them stick together. Repeat this across the entire base: every cube should have its opposite pole touching the one next to it.
Wait, why is that better than just stacking all north poles up? If you stack cubes so all their north faces are on the top, the field is strong right under each cube but weak in the gaps between them. By alternating poles along the grid, you create a larger, more uniform field across the entire top of the base, so your small object will be held securely no matter where you place it on the base. I learned this the hard way early on: a customer tried stacking 10 cubes all north-up to hold a small metal model, and it only stuck on the exact spots where a cube was, falling right through the gaps. Alternating poles fixed that immediately.
Step 3: Test the field strength. Once your cubes are in place, place a small steel object (or a small object with a steel sticker attached, which we also sell for these projects) on top of the base. If it only sticks in some spots, double-check your pole alignment—you probably have two like poles next to each other, which weakens that area. Adjust one cube until it sticks evenly across the base. If it’s too weak, add an extra row of cubes around the edge of the base to boost the overall field strength, or upgrade to a higher grade magnet. If it’s too strong and you can barely pull the object off, it’s fine for heavier items, but just be careful not to pinch your fingers when removing it.
Now, if you want a more dynamic force field—like a floating small object, or a field that can move without repositioning magnets—we can get a little more advanced. Repulsion fields work by placing like poles facing each other, so the object is pushed away from the base, suspended in mid-air. To do this, build two separate grids: one on your base (same pole-alternating setup as before) and a second set of magnets attached to the bottom of your small object. Align the second set so like poles face the base grid—north to north, south to south. The repulsion force will hold the object up. For small objects, this works best with 10mm or larger N45 grade cubes, and you’ll need a small guide (like a plastic tube down the middle) to keep the object from sliding off to the side. I’ve seen customers use this to make floating keychains, small display stands for figurines, even tiny rotating shelves for desk accessories.
But before you start gluing cubes down and building your force field, let’s talk about safety—something I hammer into every customer who orders cube magnets from us, because these little things are powerful and easy to misuse. First, never let small kids play with loose cube magnets: if a child swallows two, they can stick together in the intestines, causing serious medical issues. Second, keep them away from pacemakers, hearing aids, and other electronic medical devices—they can interfere with the magnetic function. Third, when working with multiple magnets, keep your fingers out of the way: they snap together fast, and a pinched finger is no joke, even with small cubes. Also, don’t use them near data storage like hard drives, SD cards, or phones—they can erase data easily.
Now, let’s cover some common mistakes I see people make when building these magnetic fields, so you can avoid them. The first is using too few magnets. A lot of people think one strong cube is enough, but for a stable field, you need multiple arranged to spread the force. A 5mm N35 cube can pull 100g, but that pull is only within a 1cm radius; adding four more cubes arranged in a cross doubles the covered area and makes the pull consistent. The second mistake is not securing the magnets to the base. If you don’t glue or clip them in place, they can flip and reverse their poles, destroying the field. Use a strong, non-magnetic glue like epoxy or super glue (avoid hot glue, it doesn’t hold as well for heavy use). The third mistake is trying to use non-ferromagnetic objects. Cube magnets only pull on iron, nickel, or steel, so if your object is plastic, wood, glass, or ceramic, you’ll need to attach a small steel disc (we sell these in packs of 50 for just this purpose) to the back or bottom. That tiny disc is all it takes to make the object stick to the magnetic field.
What are some practical uses for these small magnetic force fields, by the way? We’ve had customers make custom phone stands that hold the phone securely while charging, craft displays that let them hang embroidery hoops without visible hooks, tiny tool holders for screwdrivers or scissors in a workshop, and even desk organizers that keep paper clips, push pins, and stationery within easy reach. One customer used a 6×6 cube grid to create a display for her collection of small vintage pocket watches—each watch had a steel back, so it sat flat and stable on the grid, no glue or hangers needed. Another made a floating photo frame for their desk, using two sets of cubes to hold a small 2×3 inch photo suspended between two acrylic panels.
If you’re ready to try building your own magnetic force field, remember that starting small is key. Don’t invest in a big project with 50 cubes until you’ve tested a 2×2 grid with 4 cubes to get the pole alignment right. Our team at the cube magnet supplier has put together free setup guides for common projects, like small craft displays and floating stands, and we’re always happy to answer questions if you run into trouble—we’ve built hundreds of these with customers, so we know what works and what doesn’t.
Before you go, a quick note: while cube magnets are versatile and fun, always use them responsibly, especially with projects that involve children or medical devices. If you’re planning a larger project, or need custom-sized magnets or accessories like steel discs or non-magnetic bases, our team can help you source exactly what you need.
To learn more about how to tailor a magnetic force field to your specific small object, or to ask questions about magnet grades, sizes, or setup tips, feel free to reach out to our team for purchasing and consultation. We’re here to help you turn those tiny cubes into a functional, reliable magnetic field that works for your project.
U-shaped Magnets References
- "Neodymium Magnets: Properties and Applications." Magnetic Materials Association, 2022.
- "Hands-On Physics: Building Simple Magnetic Arrays for Everyday Use." Science Buddies, 2023.
- "Safety Guidelines for Rare Earth Magnets." Consumer Product Safety Commission, 2021.
- "Magnetic Force Field Uniformity in Cube Magnet Grids." Journal of Applied Physics, vol. 131, no. 10, 2022, p. 103902.
Dongguan Jinconn New Material Holdings Co., Ltd.
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Address: Xiaohe Industry Zone, Daojiao Town, Dongguan City,Guangdong Province,China
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