How to Use Magnetic Connections for Modular Model Parts

Magnetic connections are a game-changer for model builders, tabletop gamers, and prototypers alike. Instead of gluing or permanently attaching parts, magnets let you create modular, interchangeable, and even articulated components that snap together effortlessly.

In this guide, you’ll learn how to integrate neodymium magnets into your models to build flexible, dynamic designs.

🧲 Why Use Magnetic Connections?

Magnetic connections offer several benefits over traditional assembly methods:

• ✅ Modularity – swap parts in seconds
• ✅ No glue needed – parts stay clean and reconfigurable
• ✅ Quick disassembly – ideal for transport and storage
• ✅ Invisible joints – hidden magnets preserve the look of your model
• ✅ Precision alignment – magnets snap into place with satisfying accuracy

🛠️ What You’ll Need

• Neodymium magnets (small discs or cylinders)
  – Common sizes: 3×1 mm, 5×2 mm, or 6×3 mm
  – Choose based on your model’s scale and material
• Model parts (plastic, resin, wood, etc.)
• Drill or pin vise (to make clean holes for magnets)
• Super glue or epoxy
• Tweezers (for handling small magnets)
• Polarity checker (or another magnet)

🧩 Step-by-Step: Installing Magnetic Joints

Step 1: Plan the Connection
Decide where the parts will join magnetically. Mark the exact spots on each piece — keep the alignment precise!

Step 2: Drill Magnet Holes
Use a drill bit the same size as your magnet’s diameter. Drill just deep enough for a flush fit.

Step 3: Check Polarity First!
Before gluing, test the magnets’ polarity. You want opposing poles to face each other so they attract — not repel.

💡 Tip: Use a Sharpie to mark the same pole (e.g. north) on all magnets to avoid mix-ups.

Step 4: Glue in Place
Apply a tiny drop of super glue or epoxy to the hole, then press the magnet in using tweezers. Let it dry completely.

Step 5: Test the Fit
Once both sides are dry, bring the parts together. They should snap into place with a satisfying “click.”

🧠 Applications and Ideas

• Tabletop Miniatures – swap weapons, heads, or arms
• Scale Models – attach panels, doors, or modules
• Sci-Fi Vehicles – use magnets for rotating turrets or cargo bays
• Educational Models – demonstrate assembly/disassembly
• Toy Prototypes – build functional magnetic joints for testing

⚠️ Tips for Success

• Use matching magnet sizes for even pull
• Don’t overtighten magnets — they may crack under pressure
• Use epoxy for stronger bond in high-friction joints
• For heavy parts, use multiple magnets or larger ones
• Seal magnets with a thin layer of paint or epoxy if visible

🛒 Recommended Magnets at Yourmagnets.net

We offer ideal magnets for modular model building:

🔹 3×1 mm Disc Magnets – Great for miniature joints
🔹 5×2 mm Neodymium Magnets – A versatile all-rounder
🔹 Rubber-coated Magnets – For safer use with delicate parts

Need advice for your specific model scale? Contact us – we’re happy to help!

In Summary

Magnetic connections are a powerful tool in model building, combining clean aesthetics with practical flexibility. With just a bit of planning and a few neodymium magnets, you can bring interactivity and modularity to your projects like never before.