Deryun Small Magnets Review: Are These Tiny Rare Earth Magnets the Ultimate DIY Essential?
Are Deryun Small Magnets worth it? Our expert review covers NdFeB pull force, Ni-Cu-Ni coating, 3D printing, Warhammer magnetizing & home organization uses.
Check Price on AmazonProduct Details & Features
Precision, power, and permanence. When you are engineering a custom 3D printed prototype, magnetizing tabletop miniatures for interchangeable loadouts, or designing a minimalist home organization system, standard ceramic magnets simply fail. They are bulky, weak, and prone to chipping. Enter the realm of rare earth neodymium.
The Deryun Small Magnets pack delivers industrial-grade magnetic pull in a microscopic footprint. Engineered from high-quality NdFeB (Neodymium Iron Boron), these miniature discs offer an unparalleled size-to-strength ratio, allowing creators, makers, and homeowners to build invisible structural joints, seamless clasps, and heavy-duty organizational arrays without compromising aesthetics. If you rely on super glue adhesives and mechanical fasteners, integrating these tiny powerhouses into your workflow will fundamentally change how you construct, repair, and organize.
Product Overview
The modern maker requires components that are reliable and consistent. The Deryun Small Magnets arrive as a bulk pack of precision-machined neodymium discs. Unlike cheap novelty magnets found in big-box craft aisles, these are engineered with strict dimensional tolerances. This means if you drill a 5mm hole using a precision pin vise hand drill, every single magnet in the pack will fit flush.
Housed in a compact, magnetically shielded storage case—essential to prevent them from snapping onto your metal craft tools—these discs are designed for immediate deployment. They boast a pristine, mirror-like finish, which isn’t just for show. That finish is a highly functional triple-layer electroplating that protects the fragile rare earth core from oxidation, moisture, and impact shattering.
Whether you are embedding them into custom PLA 3D printer filament prints, upgrading your kitchen with hidden magnetic spice jars, or designing custom jewelry making clasps, the Deryun multi-pack provides the volume and quality necessary for mass-scale DIY projects.
Key Features & Benefits
Unrivaled Magnetic Strength (Size-to-Power Ratio)
Neodymium is the strongest permanent magnet material commercially available. Despite their tiny diameter, a single Deryun magnet can securely hold multiple sheets of thick cardstock, heavy glossy photo paper, or laminated blueprints against a glass whiteboard without sliding. When paired together (magnet-to-magnet), the attraction force multiplies, creating a snap-fit joint that can easily support the weight of heavy resin 3D miniatures or solid plastic parts.
Ni-Cu-Ni Triple Layer Coating
Raw neodymium is highly vulnerable to corrosion and is surprisingly brittle. Deryun mitigates this fundamental flaw through an advanced Nickel-Copper-Nickel electroplating process.
- Base Nickel Layer: Provides the primary defense against rust and moisture, crucial if you are using them in humid environments like garages or alongside acrylic model paints.
- Middle Copper Layer: Adds thermal stability and acts as a shock absorber, significantly reducing the chance of the magnet cracking when it forcefully snaps against a metal surface or another magnet.
- Top Nickel Layer: Delivers a smooth, friction-resistant, silver-toned finish that looks professional and allows cyanoacrylate super glue to bond effectively to its surface.
Axial Magnetization
These magnets are axially magnetized, meaning the magnetic poles are located on the flat circular faces, not the curved edges. This directs the maximum magnetic field precisely where you need it for flush-mounting. It makes them ideal for countersinking into wood using micro drill bit sets or embedding into the bases of Warhammer 40k miniatures for secure transport on metal trays.
Consistent Dimensional Tolerances
In the world of fine crafting, a fraction of a millimeter matters. If you are using digital calipers to measure a recess for a hidden latch on a wooden jewelry box, you need the magnet to drop in perfectly. Deryun maintains strict quality control, ensuring that batch-to-batch, the diameter and thickness remain uniform. This saves you from having to carve out extra space with exacto hobby knife sets or filling gaps with epoxy putty green stuff.
The Ultimate Guide to Real-World Applications
The true value of the Deryun Small Magnets lies in their staggering versatility. Below is a deep dive into how different disciplines are utilizing these rare earth discs.
Miniature Tabletop Gaming & Wargaming
For enthusiasts of games like Dungeons & Dragons, Warhammer, or Marvel Crisis Protocol, “magnetizing” is a necessary skill. Miniatures are expensive, and rules change constantly. Gluing a single weapon onto a model locks you into one playstyle.
By drilling a shallow recess into the shoulder joint of a plastic or metal miniature figure using a Dremel rotary tool with Dremel precision bits, you can glue a Deryun magnet into the torso and another into the arm. Now, weapons can be swapped instantly.
Furthermore, storing fragile painted models is a nightmare. Foam cases can rub off your hard-earned Citadel contrast paints. The pro-solution? Superglue a magnet to the underside of the miniature’s base. You can then transport your entire army safely inside a cheap plastic storage organizer lined with adhesive-backed magnetic sheets or plain sheet metal. The models won’t move, even if you turn the box upside down.
3D Printing & Prototyping
Whether you run a high-resolution Elegoo Mars 3 resin printer or a standard FDM machine using PETG filament, printing large objects often requires splitting the model into pieces.
Instead of permanently bonding parts with J-B Weld ClearWeld epoxy, you can design small cylindrical voids into your CAD files. Mid-print, you pause the machine, drop a Deryun magnet into the void, and let the printer print over it. The result is a fully encapsulated, invisible magnetic joint. This is perfect for custom board game inserts, modular cosplay armor, or interlocking tool organizers.
Home, Office & Kitchen Organization
Throw away your bulky, ugly plastic fridge clips. Deryun magnets offer a sleek, minimalist aesthetic. A single tiny disc can hold takeout menus, thick wedding invitation cardstock, or children’s artwork without obscuring the paper.
For the kitchen, DIYers are gluing these inside wooden blocks to create floating magnetic knife strips. You can also superglue them to the lids of small glass jars, allowing you to hang your spices directly underneath your cabinets or onto a wall painted with dark magnetic chalkboard paint.
In the office, they pair flawlessly with high-end glass boards, where standard ferrite ceramic magnets simply lack the field depth to penetrate the glass and reach the steel backing. Combine them with magnetic whiteboard erasers and fine tip dry erase markers for the ultimate productivity setup.
Garage & Workshop Utility
While heavy tools require larger magnetic tool holder strips, Deryun small magnets are perfect for micro-organization in the shop. Attach them to the sides of your small parts tackle boxes to catch stray screws. Glue one to the handle of your precision tweezers or X-Acto Z Series knives so they can be instantly snapped to your desk lamp or tool rack, keeping your self-healing cutting mat clear of clutter.
Technical Specifications
Understanding the exact specifications of your hardware is critical for successful project planning. Here is how the Deryun magnets break down on a technical level.
| Feature | Detail | Check Price |
|---|---|---|
| Material Base | Neodymium-Iron-Boron (NdFeB) | View Alternatives |
| Plating/Coating | Triple Layer (Ni-Cu-Ni) | View Protective Sprays |
| Magnetization | Axial (Through Thickness) | View Diametrical Magnets |
| Shape | Disc / Cylinder | View Block Magnets |
| Max Operating Temp | 80°C / 176°F | View High-Temp Magnets |
| Ideal Adhesive Pair | Cyanoacrylate (Super Glue) | Check Loctite Gel |
| Alternative Adhesive | 2-Part Epoxy | Check Gorilla Epoxy |
Essential Accessories & Tool Pairings
Working with tiny rare earth magnets requires a specific toolset. If you are handling them with bare hands and cheap school glue, you will be deeply frustrated. To get the most out of your Deryun magnets, consider these essential pairings:
- Adhesives: Neodymium’s smooth nickel plating can repel weak glues. You need industrial cyanoacrylate. Gorilla Super Glue Gel or Loctite Ultra Gel Control are highly recommended because the gel formula fills microscopic gaps and doesn’t run. For an instant cure, pair your glue with a Zip Kicker CA Accelerator. If you are bonding to fabric or leather, switch to E6000 craft adhesive.
- Handling Tools: Because these are so small and strong, they will constantly snap together. Trying to separate them with fingernails is tedious. Use non-magnetic reverse grip tweezers or brass/plastic tweezers. Keep a magnetic pick-up sweeper nearby in case you drop a stack on the carpet.
- Hobby Tools: To embed these cleanly, you must excavate material. A quality pin vise hand drill gives you manual control to avoid drilling too deep. If working with plastic model kits, use Tamiya Extra Thin Cement to fuse surrounding plastics after the magnet is placed.
Safety & Handling Guide
Neodymium magnets are not toys. Despite their small size, their intense magnetic field and material properties demand respect and safe handling practices.
- Choking & Ingestion Hazard: This is the most critical warning. Small magnets are incredibly dangerous if swallowed, as they can attract each other across intestinal walls, causing fatal perforations. Keep them locked in plastic storage organizers absolutely out of reach of children and pets.
- The “Snap” Hazard: Neodymium is essentially a rigid ceramic metal. If you allow two magnets to fly at each other from a distance, the impact force can cause the nickel plating to shatter, sending sharp metallic shrapnel into the air. Always wear safety goggles when working with them, and slide the magnets apart laterally rather than pulling them straight apart.
- Electronic Interference: Keep these away from pacemakers, old CRT monitors, magnetic strip credit cards, and mechanical watches. While solid-state drives (SSDs) are generally safe, it’s best practice to keep strong magnets off your laptop keyboard.
- Surface Preparation: Before gluing, use fine-grit sandpaper or a diamond needle file set to lightly score the bottom of the magnet. This gives the cyanoacrylate super glue a mechanical grip, preventing the magnet from eventually pulling out of its socket. Wearing nitrile disposable gloves keeps the natural oils of your fingers off the plating, ensuring a stronger chemical bond.
Alternatives to Consider
While the Deryun small discs are incredibly versatile, they might not be the exact shape or strength for every edge case.
- For Heavy-Duty Hanging: If you need to hang heavy winter coats, extension cords, or cast iron pans, these micro-magnets won’t cut it. You need dedicated neodymium magnetic hooks or massive large N52 neodymium magnets.
- For Woodworking Joints: If you are building removable panels for custom cabinetry, round discs can be tricky to align perfectly without spinning. Countersunk neodymium magnets that allow you to drive a physical screw through the center provide a much more secure mechanical hold than glue alone.
- For Flexible Applications: If you are making custom bumper stickers, labeling warehouse racks, or creating movable chore charts, rigid rare earth magnets are overkill and hard to attach seamlessly to paper. Instead, opt for flexible magnetic tape or cut-to-size adhesive backed magnetic sheets.
- For Jewelry: While you can craft DIY clasps with these discs, it often requires messy epoxy resin kits and jewelry making pliers. Buying pre-made magnetic jewelry clasps is usually more aesthetic and secure for necklaces and bracelets.
Pros & Cons
Top Features (Pros):
- Exceptional magnetic hold for their microscopic footprint.
- Triple-layer Ni-Cu-Ni coating provides excellent resistance against rust and impact chipping.
- Consistent dimensions ensure easy, repeatable embedding for 3D printing and model making.
- Aesthetic mirror-finish looks clean on refrigerators and glass whiteboards.
- Cost-effective bulk packaging ideal for large, multi-stage DIY projects.
Limitations (Cons):
- Inherently brittle; they can shatter if allowed to aggressively snap together from a distance.
- Extreme caution required regarding children and pets (severe ingestion hazard).
- The smooth nickel coating requires scoring or premium CA glue for a permanent bond in high-stress joints.
- Difficult to separate stacks without a sliding technique or specialized non-magnetic tools.
Expert Verdict
“In the DIY and crafting space, you are only as good as your hardware. The Deryun Small Magnets punch drastically above their weight class. Whether you are heavily invested in the Warhammer hobby, running a farm of resin 3D printers, or simply trying to declutter an office space, these rare earth discs provide industrial reliability. Their strict dimensional accuracy and robust nickel plating make them superior to generic craft-store alternatives. Treat them with respect, pair them with high-quality cyanoacrylate, and they will permanently elevate the quality of your builds.”
The Bottom Line
If you are tired of weak ceramic magnets that slide down your fridge, or if you need a reliable, invisible fastening system for your miniatures, woodworking, or 3D prints, the Deryun pack is an absolute must-have for your tool kit. They are cheap enough to buy in bulk, strong enough to handle demanding loads, and small enough to hide in almost any application.
Stop settling for inferior mechanical joints and messy glue-ups. Upgrade your crafting, organizing, and building workflow today with the raw power of rare earth neodymium.
Frequently Asked Questions (FAQ)
What are Deryun Small Magnets made of?
Deryun Small Magnets are manufactured from a sintered Neodymium-Iron-Boron (NdFeB) alloy — the same rare earth material used in industrial motors and medical devices. Each magnet is protected by a triple-layer Nickel-Copper-Nickel (Ni-Cu-Ni) electroplating that prevents oxidation and extends their service life indefinitely under normal conditions.
How strong are Deryun small neodymium magnets?
Despite their micro footprint, a single Deryun disc magnet carries enough pull force to hold 10–15 sheets of standard A4 paper vertically against a steel surface without slipping. The N-grade alloy ensures they significantly outperform standard ferrite or ceramic magnets of the same physical size.
What is the best adhesive for gluing Deryun small magnets?
High-viscosity cyanoacrylate (CA) gel super glue — such as Gorilla Glue Gel or Loctite Ultra Gel Control — is the professional recommendation. The gel formula fills microscopic surface gaps and does not run into unwanted areas. For bonds under heavy shear stress, use a two-part JB Weld or Gorilla Epoxy. Always lightly sand the magnet’s flat face first to give the adhesive a mechanical key.
Are Deryun magnets safe around children and pets?
No. Deryun Small Magnets are a severe ingestion hazard and are not toys. If multiple magnets are swallowed, they can attract each other across intestinal walls, causing life-threatening injuries. Always store them in a locked container well out of reach of children and pets.