Magnet Box Of 12×3MM black – 50 Pcs

Magnet Box of 12×3MM Black – Premium Small Disc Magnets for Crafts, Packaging & DIY

Product Overview

The Magnet Box of 12×3MM Black is a compact yet powerful solution designed for creators, crafters, DIY enthusiasts, packaging professionals, and hobbyists who demand strength, precision, and a clean aesthetic. These round disc magnets measure 12mm in diameter and 3mm in thickness, making them ideal for applications where space is limited but reliable magnetic holding power is essential.

Finished in a sleek black coating, these magnets not only perform exceptionally well but also blend seamlessly into modern, minimal, luxury, or handcrafted designs. Whether you’re making magnetic boxes, resin art projects, gift packaging, wooden crafts, acrylic items, jewelry boxes, or stationery products, this magnet size is one of the most versatile and widely used in the craft and packaging industry.

Packed conveniently in a secure magnet box, this set ensures safe storage, easy handling, and protection against chipping or accidental loss.

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Key Specifications

• Product Type: Disc Magnet

• Diameter: 12mm

• Thickness: 3mm

• Color: Black

• Shape: Round / Circular

• Finish: Black coated (anti-rust & aesthetic finish)

• Packaging: Box pack

• Material: High-strength magnetic alloy (commonly neodymium-based)

• Magnetization: Axially magnetized

• Application Type: Crafts, DIY, packaging, art, utility

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Powerful Performance in a Compact Size

Despite its small size, the 12×3MM magnet delivers impressive magnetic force suitable for light to medium holding requirements. The thickness of 3mm provides a balanced combination of strength and subtlety, allowing it to remain hidden within materials like MDF, plywood, acrylic sheets, resin castings, cardboard, leather, or fabric-backed projects.

These magnets are especially popular for:

• Magnetic box closures

• Resin coasters and trays

• Jewelry boxes and keepsake cases

• Handmade diaries and notebooks

• Invitation boxes and wedding hampers

• Magnetic frames and signage

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Elegant Black Finish for Premium Look

Unlike standard silver magnets, the black-coated surface offers a refined, premium appearance. This makes them perfect for visible or semi-visible applications where design matters. The coating also adds a layer of corrosion resistance, helping the magnet last longer when used in resin art, indoor décor, or boxed products.

The black color is especially preferred in:

• Luxury packaging

• Modern craft designs

• Resin art with dark or metallic themes

• Minimalist and industrial-style décor

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Ideal for Resin Art & Craft Projects

For resin artists, this magnet size is a trusted companion. It fits perfectly inside resin layers without bulging and provides reliable hold once cured. Use these magnets in:

• Resin boxes and organizers

• Resin trays with detachable lids

• Resin wall art panels

• Photo frames and nameplates

Their compact form ensures clean edges, smooth finishes, and professional results.

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Perfect for Packaging & Gift Boxes

If you design magnetic gift boxes, rigid boxes, or handcrafted packaging, the 12×3MM black magnet is a go-to choice. It provides:

• Secure closure

• Easy opening and closing

• Long-lasting durability

• A premium unboxing experience

These magnets are commonly embedded inside cardboard, MDF, or wrapped within fabric and paper layers.

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Easy to Use & Install

The flat disc shape allows easy installation using:

• Epoxy resin

• Fevicol / craft glue

• Hot glue (recommended with care)

• Industrial adhesives

They can also be inserted into pre-drilled holes or slots for a flush fit. For best results, always ensure correct polarity before fixing.

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Applications & Uses

Craft & DIY

• Handmade boxes

• Scrapbooking projects

• DIY organizers

• School projects

Resin Art

• Magnetic resin trays

• Decorative boxes

• Wall décor

• Functional resin items

Packaging & Stationery

• Rigid gift boxes

• Magnetic folders

• Invitation boxes

• Premium notebooks

Home & Office

• Cable holders

• Light signage

• Magnetic mounts

• Small tool holders

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Why Choose 12×3MM Black Magnets?

• ✔ Compact yet strong

• ✔ Premium black finish

• ✔ Ideal for hidden installations

• ✔ Long-lasting and durable

• ✔ Widely used standard size

• ✔ Clean professional look

This size offers the perfect balance between strength and subtlety, making it suitable for both decorative and functional purposes.

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Storage & Safety Guidelines

• Store magnets away from electronics, credit cards, and magnetic strips

• Keep away from children

• Handle carefully to avoid pinching fingers

• Do not expose to excessive heat

• Separate magnets slowly to prevent chipping

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Quality Assurance

Each magnet in the box is precision-cut and quality-checked to ensure uniform size, consistent magnetism, and smooth coating. The box packaging keeps the magnets aligned and protected during storage and transport.

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Who Should Buy This Product?

• Resin artists

• Craft supply sellers

• DIY hobbyists

• Packaging manufacturers

• Gift box makers

• Stationery brands

• Handmade product creators

If your work involves clean design, neat closures, and professional finishes, this magnet box is a must-have.

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Product Highlights at a Glance

• Small round black disc magnets

• Size: 12mm × 3mm

• Ideal for crafts, resin art & packaging

• Strong magnetic hold

• Elegant black coating

• Convenient box packing