Neodymium magnets are incredibly strong for their size, but bonding them correctly requires the right adhesive. Choosing the wrong glue can lead to weak bonds, damaged coatings, or magnets that pop loose at the worst possible time. Understanding which adhesives work best with neodymium magnets will help your project last longer and perform better. So, what adhesives work best with neodymium magnets?

This guide covers which adhesives to use, which to avoid, and how to get the strongest bond possible.

Why Adhesive Choice Matters with Neodymium Magnets

Neodymium magnets are typically coated with nickel to protect them from corrosion. That coating is smooth and non-porous, which makes adhesion more challenging than bonding to wood or fabric. In addition, magnets experience constant pull forces that stress glue joints over time.

Using the correct adhesive helps prevent magnets from detaching unexpectedly and protects the magnet’s coating, which extends the life of your project.

What Adhesives Work Best for Neodymium Magnets

Two-Part Epoxy

Two-part epoxy is one of the most reliable adhesives for neodymium magnets. When mixed properly, it forms a strong mechanical bond that resists both shear and pull forces.

Epoxy works well for:

  • Metal-to-metal bonding

  • Magnets embedded in wood or plastic

  • Permanent installations

Allow full cure time before applying load to the magnet. Rushing this step can weaken the bond.

Cyanoacrylate (Super Glue)

Cyanoacrylate adhesives can work well for lightweight applications. They bond quickly and are easy to use, making them popular for crafts and small DIY projects.

Super glue is best for:

  • Small disc or block magnets

  • Paper, cardboard, or lightweight materials

  • Temporary or low-stress applications

Because cyanoacrylate can become brittle, it is not recommended for projects that will experience repeated impact or heavy loads.

 

Polyurethane Adhesives

Polyurethane-based adhesives expand slightly as they cure, which can help fill gaps between uneven surfaces. These adhesives are flexible once cured and work well with wood and porous materials.

They are useful for:

  • Woodworking projects

  • Magnets mounted inside cavities or recesses

  • Applications requiring vibration resistance

Be cautious of expansion, as excess adhesive can push magnets out of position if not appropriately clamped.

Adhesives to Avoid with Neodymium Magnets

Hot Glue

Hot glue is one of the most commonly misused adhesives with magnets. While it may hold temporarily, it softens under heat and stress and often fails when magnets snap together.  Hot glue usually does not permanently demagnetize neodymium magnets, but it can weaken them or damage their coating.

Silicone Sealants

Silicone adhesives remain flexible, which can be helpful in some sealing applications, but they generally lack the strength to hold neodymium magnets securely. They may allow magnets to twist or detach under pull force and are better suited as sealants than structural adhesives.

Low-Strength Craft Glue

General-purpose craft glues, such as school glue or basic white glue, are not designed to bond metal surfaces. These adhesives will fail quickly when used with neodymium magnets.

Tips for Stronger Bonds

To get the best results from any adhesive:

  • Clean the magnet’s surfaces with isopropyl alcohol

  • Apply adhesive evenly without excess

  • Allow full curing time before use

Avoid drilling, cutting, or grinding neodymium magnets. They are brittle and can crack or shatter if modified.

When to Skip Adhesives Altogether

In some cases, adhesives are not the best solution. Mounting options, such as countersunk magnets, can provide stronger, more reliable results without glue. Apex also carries a variety of adhesive-backed magnets, so if you'd prefer not to apply the adhesive yourself, check out our selection here.

Get Expert Help from Apex Magnets

Choosing the right adhesive is just one part of using neodymium magnets effectively. With over 20 years of experience, Apex Magnets helps customers select the right magnet, mounting method, and materials for their projects.

If you have questions about adhesives or magnet selection, contact our team. We’re always happy to help you build something that lasts.

 

Magnets can be dangerous. Neodymium magnets, especially, must be handled with care to avoid personal injury and damage to the magnets. Fingers and other body parts can get severely pinched between two attracting magnets. Bones can be broken by larger magnets. 

Visit our Magnet Safety page to learn more.