These 5 mm x 2 mm N52 neodymium disc magnets are sized and graded for precision hobby work — from magnetizing Warhammer 40k arms and tank turrets to building DIY needle minders that keep your embroidery needle exactly where you left it.
At N52 grade, each disc holds up to 1.3 lbs against a steel surface. One magnet per miniature base holds the model securely on a steel transport tray; a matched pair grips your embroidery needle through standard Aida cloth without marking or stretching the fabric. The 5 x 2 mm footprint is the recommended size for medium and large wargaming components — large enough for a reliable snap, compact enough to disappear inside a drilled socket or printed seat.
Each disc carries a triple-layer NiCuNi coating: smooth, corrosion-resistant, and scratch-free on painted surfaces. Unlike ceramic magnets, the nickel finish leaves no black streaks on fabric. Axial magnetization means the flat faces are the poles — correct orientation for embedded pocket and socket use. Consistent dimensions across the pack mean every piece drops into the same seat without adjustment.
For 3D printing, these discs press-fit into standard 5 mm magnet pockets — no glue needed when tolerances are tight. In hand, each magnet is about the size of a small shirt button: thin enough to embed flush, strong enough to feel the snap when two faces align. They hold through up to 3 mm of PLA or cardstock, making them practical for snap-fit lids, modular display bases, and magnetic craft closures.
N52 neodymium is brittle — slide discs apart sideways rather than pulling straight off to prevent chipping. If choosing between N48 and N52: N52 delivers roughly 10–15% more pull force in the same footprint, which matters when the pocket is fixed and upsizing is not an option.
Keep away from pacemakers, electronic devices, and children. If swallowed, magnets can cause serious internal injury — seek immediate medical attention. Not suitable for children under 14.