Neodymium Disc Magnets 8mm x 3mm (5/16 x 1/8 inch) N48, 3.6 lb Pull – Strong Round Rare Earth Disk Magnets for 3D Printing, Crafts, Cabinet Closures (50 Pack)

Designing a snap-close box, enclosure lid, or cabinet latch? The 8mm × 3mm footprint is one of the most-used magnet sizes in 3D-printed designs on Thingiverse, Printables, and MakerWorld — and at N48 grade, each disc delivers up to 3.6 lbs of holding force in a profile barely wider than a pencil eraser.Axially magnetized through the 3mm thickness and coated in triple-layer NiCuNi (nickel-copper-nickel) for corrosion resistance, these are rated to 80°C / 176°F. The smooth nickel surface press-fits cleanly into printed seats and won't scratch adjacent PLA or PETG walls. Consistent dimensions across all 50 pieces mean no sorting — every magnet in the pack drops into an 8mm seat with the same snug, secure fit.Common applications: snap-close lids for 3D-printed enclosures and storage containers; magnetic door latches for printer enclosures and cabinetry; honeycomb tool-wall inserts and workshop organizers; closures for handmade craft boxes, fabric pouches, and scrapbooking projects; wargaming display bases and miniature transport trays; needle minders and embroidery project organizers. Also the standard fit for extruder rotation indicator designs on Prusa MK3 and Ender 3 — the 8mm diameter matches the motor shaft housing precisely where smaller magnets slip.Will it hold through a printed wall? At 3.6 lbs pull force, these grip firmly across a single PLA layer. Thicker material reduces effective pull — plan for face-to-face magnet contact or minimal separation for reliable closure. The NiCuNi coating holds up through repeated snap cycles without flaking at the edges or leaving marks on adjacent surfaces.SAFETY: Strong magnets — pinching hazard. If swallowed, magnets can attract across intestinal walls and cause serious internal injury — seek immediate medical attention. Keep away from children under 14, pacemakers, hearing aids, and magnetic storage media.

• STRONG N48 GRADE – UP TO 3.6 LBS PULL: Each 8mm x 3mm disc delivers up to 3.6 lbs of holding force — snaps printed lids shut, secures cabinet latches, and holds tool organizers against steel
• PRECISION FIT FOR 3D-PRINTED SEATS: Consistent 8mm diameter across every piece means these drop into standard magnet seats in printed enclosures without gaps or rocking — no glue needed
• VERSATILE USES: Snap closures for 3D-printed containers and modular enclosures, extruder rotation indicators for Prusa and Ender printers, wargaming display bases, needle minders, whiteboard magnets, and cabinet door catches
• 50 PACK, TRIPLE-LAYER NICKEL COATING: Fifty N48 neodymium disc magnets, 8mm × 3mm, NiCuNi plated — corrosion-resistant finish survives repeated snap cycles without flaking or scratching surfaces
• N48 OUTPERFORMS STANDARD GRADE IN A FIXED POCKET: At this diameter, N48 produces noticeably stronger attraction than N35 in the same space — right pick when the seat is fixed and pull force matters