A 20mm disc that is only 1mm thick seems like it should be a compromise ? but at N48 grade, this flat neodymium magnet holds up to 3.1 lbs despite its slim profile. That combination makes it the right choice when you need real holding power in a space where a thicker magnet simply will not fit.
Resin crafters embed these discs into the back of handmade molds, ornaments, and decorative pieces. The wide 3/4 inch face bonds cleanly with epoxy and craft adhesives, and the smooth nickel surface will not scratch a refrigerator door or whiteboard. The circular geometry is consistent piece to piece, so every disc drops cleanly into a 20mm drilled recess or laser-cut pocket without adjustment.
Beyond resin work, these flat rare earth magnets work well for DIY closures on handmade boxes, fabric pouches, and bookbinding covers; as low-profile fridge and whiteboard organizers that do not create a step under whatever they hold; and for card making or photo display where a bulky magnet would ruin the look. Makers also press them into 3D-printed enclosures as snap-fit connectors and alignment guides.
Common questions: does 1mm hold enough? Yes ? 3.1 lbs is a generous margin for resin pieces and paper notes. Does the coating hold up in resin? The NiCuNi triple-layer plating is resistant to most craft adhesives and epoxy; rough up the surface slightly before gluing for best bond. Will it stick through cardboard or thin wood? Grip reduces with distance, but the N48 grade maintains useful force through a layer of thin cardboard or 1mm plywood.
Safety: keep away from pacemakers and other electronic devices. These magnets snap together forcefully and can pinch skin. If more than one magnet is swallowed, they can attract through intestinal walls and cause serious internal injury ? keep away from children. Not suitable for children under 14.