3mm x 3mm x 0.5mm (1/8" x 1/8" x 1/64") Neodymium Square Block – N52 Grade 

Key Features:

• Dimensions: 3mm Length × 3mm Width × 0.5mm Thickness (tolerance ±0.05mm)
• Magnet Grade: N52
• Pull Force: 0.18 LB
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating for corrosion resistance
• Magnetization: Magnetized through the 0.5mm thickness (Poles on the flat square faces)
• Shape: Ultra-Thin Rectangular Block

Material Description:

Our 3x3x0.5mm N52 blocks are designed for "invisible" fastening where a circular magnet just won't fit. The square edges allow multiple magnets to be tiled side-by-side for a continuous magnetic strip. Because they are exceptionally thin, they can be glued behind paper or thin veneers without creating a bulge, making them the preferred choice for high-end packaging and micro-detailing.

Handling Advice: These magnets are extremely fragile. Never allow them to snap together from a distance. Always use a sliding motion to separate them to avoid cracking or shattering the brittle core. We recommend using non-magnetic tools for placement.

Warnings and Safety Information:

• Choking Hazard: Micro-size is dangerous for children and pets. Keep strictly in a secure container.
• Fragile: Handle with extreme care. These magnets can break easily if dropped or mishandled.
• Medical Safety: Keep away from pacemakers and other sensitive medical implants.
• Electronics: Safe for most modern devices at a distance, but avoid direct contact with magnetic storage media.

Applications:

• Magnetic closures for luxury cosmetic, jewelry, and perfume packaging
• Micro-detailing for 1/35 and 1/48 scale architectural models and dioramas
• Precision sensors in ultra-slim electronic device prototypes
• Hidden magnetic "latches" for balsa wood and foam RC aircraft
• Premium wedding invitations and bespoke "Save the Date" cards