
When considering which magnets to use for Primaris Space Marines, it’s essential to prioritize precision and durability to ensure a seamless fit and long-lasting stability. Neodymium magnets, specifically N52 grade, are highly recommended due to their strong magnetic force in small sizes, making them ideal for the intricate joints and weapon attachments of Primaris models. Opt for 1.5mm or 2mm diameter magnets with a thickness of 1mm for most applications, such as arm swaps or weapon mounts, while larger 3mm or 4mm magnets can be used for heavier components like backpacks or bases. Ensure the magnets are countersunk or glued into pre-drilled holes to maintain the model’s aesthetic integrity, and always magnetize with opposing polarities for a secure hold. This approach not only enhances customization options but also protects the models during transport and storage.
| Characteristics | Values |
|---|---|
| Magnet Size | 3x1mm (most common for weapon swaps and arm joints) |
| Magnet Type | Rare-earth neodymium magnets (strong and small) |
| Magnet Strength | N42 or higher (ensures secure hold for heavy weapons) |
| Magnet Quantity | Varies by model (e.g., 2-4 per weapon arm, 2 per torso for shoulder swaps) |
| Adhesive | Super glue or epoxy (for secure magnet attachment to model) |
| Polarity | Consistent polarity across all magnets (e.g., north on model, south on weapon) |
| Drilling Tool | 1.5mm or 2mm pin vise (for precise magnet holes) |
| Compatibility | Works with all Primaris Space Marines kits (Intercessors, Hellblasters, etc.) |
| Cost | ~$5-$15 for a pack of 100 magnets (varies by brand) |
| Durability | High (magnets do not degrade over time if properly installed) |
| Customization | Allows for easy weapon swaps, pose changes, and transport without damage |
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What You'll Learn
- Magnet Sizes: 2mm or 3mm rare-earth magnets for arms, weapons, and shoulder pads
- Magnet Placement: Arms, backpacks, and weapon swaps for easy customization and posing
- Magnet Types: Neodymium magnets for strength and durability in miniature assembly
- Magnetizing Weapons: Interchangeable weapons like bolters, flamers, and special weapons
- Magnetizing Vehicles: Attaching sponsons, turrets, and accessories for modular vehicle designs

Magnet Sizes: 2mm or 3mm rare-earth magnets for arms, weapons, and shoulder pads
Choosing between 2mm and 3mm rare-earth magnets for Primaris Space Marines hinges on balancing strength, size, and practicality. 2mm magnets, while smaller and less obtrusive, offer sufficient hold for lightweight components like arms and weapons. Their compact size minimizes the need for deep drilling, preserving the model’s structural integrity. However, their weaker magnetic force may require careful alignment to ensure a secure fit, especially for heavier weapons or dynamic poses. 3mm magnets, on the other hand, provide stronger holding power, making them ideal for shoulder pads or larger weapons that demand stability. Their increased size, however, necessitates deeper holes, which can weaken thin plastic parts if not executed precisely.
When deciding, consider the specific application. For arms and weapons, 2mm magnets often suffice, as these components are typically lighter and benefit from the reduced drilling required. For shoulder pads, 3mm magnets are preferable due to their stronger hold, which is crucial for maintaining the pose over time, especially during handling or transport. Always test the polarity of your magnets before gluing them in place to ensure proper alignment.
A practical tip is to use a 1/16" drill bit for 2mm magnets and a 1/8" bit for 3mm magnets, ensuring a snug fit without excessive play. For thin areas like wrists or weapon joints, reinforce the plastic with a small amount of superglue or epoxy around the magnet hole to prevent cracking. If you’re unsure, start with 2mm magnets for most applications and reserve 3mm for areas needing extra strength.
Ultimately, the choice between 2mm and 3mm magnets depends on your priorities: 2mm for minimalism and ease, or 3mm for robustness and reliability. Both sizes are widely used in the hobby community, with 2mm being the more popular choice for its versatility and reduced risk of damaging models. Whichever you choose, consistency in magnet size across your army ensures compatibility and simplifies future modifications.
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Magnet Placement: Arms, backpacks, and weapon swaps for easy customization and posing
Magnetizing Primaris Space Marines enhances their versatility, allowing seamless weapon swaps, dynamic posing, and easy storage. For arms, place a 2x1mm magnet in the shoulder socket and a corresponding magnet in the arm’s base. This setup accommodates both weapon-holding and open-handed poses without compromising stability. Use a small drill bit (1mm) to ensure a snug fit, and apply a thin layer of superglue to secure the magnets in place. This method works for all Primaris variants, from Intercessors to Eliminators, ensuring consistency across your army.
Backpacks, often overlooked, benefit from magnetization for both aesthetic and practical reasons. Attach a 3x1.5mm magnet to the base of the backpack and a matching magnet to the torso. This allows for quick swaps between different backpack designs, such as the standard Mk X or specialized variants like the Eliminator’s sensor array. Ensure the magnets are aligned vertically to prevent wobbling. For added durability, reinforce the connection with a small pin or plastic rod, especially for heavier backpacks.
Weapon swaps are the cornerstone of magnetized Primaris models. For bolt rifles, plasma incinerators, or auto bolt rifles, embed a 2x1mm magnet in the weapon’s grip and a corresponding magnet in the hand. For two-handed weapons like the heavy bolter, use a larger 3x1.5mm magnet to handle the extra weight. Always test the polarity of your magnets before gluing to ensure weapons attach securely. Labeling magnets with a small dot of paint can help you quickly identify which weapon goes where during assembly.
Posing becomes infinitely more dynamic with magnetized arms and weapons. For example, magnetizing the elbow joint allows for natural bending, enabling poses like reloading or pointing. Use a 1x1mm magnet for this joint to maintain a low profile. When posing, consider the model’s base and the overall composition of your unit. A squad with varied arm and weapon positions creates visual interest and tells a story on the tabletop.
Finally, plan your magnet placement with future expansions in mind. Primaris Space Marines have a growing range of weapons and accessories, so standardize magnet sizes across your army. Keep a magnetization template or diagram for reference, noting which sizes you’ve used for specific parts. This foresight ensures compatibility with new releases and simplifies the process of adding to your collection. With careful planning and execution, magnetized Primaris models become a versatile, durable, and visually striking force on the battlefield.
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Magnet Types: Neodymium magnets for strength and durability in miniature assembly
Neodymium magnets, composed of neodymium, iron, and boron (NIB), are the premier choice for miniature assembly due to their unparalleled strength-to-size ratio. For Primaris Space Marines, where precision and durability are critical, these magnets offer a robust solution. A 1.5mm x 1mm neodymium magnet, for instance, can hold up to 200 grams, more than sufficient for securing heavy weapons or interchangeable arms. Their compact size ensures minimal interference with the model’s aesthetics while providing a secure bond that withstands the rigors of tabletop gaming.
Selecting the right size and strength is crucial for optimal results. For standard Primaris components, such as weapon swaps or shoulder pads, 2mm diameter magnets with a 1mm thickness are ideal. For larger assemblies like backpacks or vehicle mounts, consider 3mm diameter magnets with a 1.5mm thickness. Always pair magnets with opposing polarities to ensure a strong connection. Use a magnetizer tool to avoid misalignment, and apply a thin layer of superglue to the magnet’s surface for added security without compromising magnetic force.
While neodymium magnets are powerful, they require careful handling to avoid damage. Their brittle nature makes them susceptible to chipping or cracking under stress, so avoid forcing components together. Keep magnets away from electronic devices, as their strong magnetic field can interfere with sensitive components. Store unused magnets in a container with a non-magnetic lid to prevent accidental attraction to metal surfaces. Despite these cautions, their durability in miniature assembly far outweighs these minor inconveniences.
The versatility of neodymium magnets extends beyond static poses, enabling dynamic customization. For example, magnetizing the waist joint of a Primaris Lieutenant allows for varied stances, enhancing the model’s visual appeal. Similarly, magnetizing vehicle hatches or drop pods enables interchangeable crews or cargo. This modular approach not only elevates the hobbyist’s creativity but also future-proofs models for new releases or rule updates. With neodymium magnets, the possibilities are limited only by imagination.
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Magnetizing Weapons: Interchangeable weapons like bolters, flamers, and special weapons
Magnetizing weapons on Primaris Space Marines allows you to swap bolters, flamers, and special weapons effortlessly, maximizing versatility without compromising aesthetics. Start by selecting 3mm x 1mm neodymium magnets—their size balances strength and discreteness, fitting snugly into the flat surfaces of Primaris weapon arms and backpacks. Use a 1/16" drill bit to create precise holes, ensuring magnets sit flush for seamless alignment. Apply a thin layer of superglue to secure magnets, allowing 24 hours for curing to prevent shifting during assembly.
The key to successful magnetization lies in consistency. Pair each weapon with a corresponding magnet polarity, ensuring they attract rather than repel. For example, if the left arm’s magnet is north-facing, the weapon’s magnet should be south-facing. Label magnets with a marker or tape to avoid confusion. Test fits before final gluing to confirm polarity and alignment, as misaligned magnets can ruin the model’s pose. This method works equally well for Intercessors, Hellblasters, and other Primaris units, preserving their dynamic poses while enabling tactical adaptability.
While magnetizing weapons offers unparalleled flexibility, it’s not without challenges. Small magnets can be fiddly, and over-gluing risks damaging the model’s surface. To mitigate this, practice on spare plasticard or old models before tackling your Primaris Marines. Additionally, avoid magnetizing every weapon—focus on those frequently swapped, like flamers or plasma incinerators, to save time and effort. For larger weapons like grav-cannons, consider 3mm x 2mm magnets for added stability, though this may require deeper holes.
The payoff for this meticulous work is immense. A squad of magnetized Primaris Marines becomes a tactical toolbox, ready to adapt to any Warhammer 40k scenario. Imagine swapping flamers for plasma incinerators mid-game or equipping a sergeant with a power fist instead of a bolt pistol—all without compromising the model’s integrity. This approach not only enhances gameplay but also elevates the hobby experience, blending creativity with strategic planning. With patience and precision, magnetizing weapons transforms your Primaris army into a dynamic, ever-evolving force.
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Magnetizing Vehicles: Attaching sponsons, turrets, and accessories for modular vehicle designs
Magnetizing vehicles in the Primaris Space Marines army opens up a world of tactical flexibility, allowing you to swap sponsons, turrets, and accessories to counter any battlefield threat. The key to success lies in choosing the right magnets and planning your design carefully.
N52 neodymium magnets, with their exceptional strength-to-size ratio, are ideal for this purpose. For sponsons and turrets, consider 3x1mm or 2x1mm magnets, ensuring a secure hold without adding excessive bulk. Smaller 1.5x1mm magnets are perfect for delicate accessories like storm bolters or lascannons, providing enough strength while minimizing visibility.
Remember, magnet placement is crucial. Drill holes slightly larger than your chosen magnets to allow for a flush fit, ensuring a clean, professional look. Use a strong adhesive like epoxy to secure the magnets, allowing ample drying time before assembling your vehicle.
Let's delve into the practicalities. Imagine you're magnetizing a Repulsor Executioner, a versatile Primaris transport. For the twin heavy bolters on the sponsons, use two 3x1mm magnets per weapon, one on the sponson and one on the weapon itself. This allows for easy swapping with other sponson weapons like lascannons or missile launchers. The main turret, housing the formidable lascannon array, demands stronger magnets. Here, four 3x1mm magnets per turret half provide a rock-solid connection, ensuring stability even during intense gameplay.
Don't forget the smaller details! Magnetize the storm bolter on the front hull using a single 1.5x1mm magnet, allowing you to replace it with a grav-gun or flamestorm heavy bolter for different tactical situations.
While magnetizing offers immense benefits, it's not without its challenges. Drilling precise holes requires a steady hand and the right tools. A pin vise with various drill bit sizes is essential. Be mindful of polarity when gluing magnets, ensuring opposite poles face each other for a strong connection. Finally, consider the weight of your magnets, especially when magnetizing larger vehicles. Excessive magnet use can make models top-heavy, affecting stability.
The payoff for careful magnetization is undeniable. You'll be able to field a truly modular army, adapting your vehicles to any opponent or mission. Imagine deploying your Repulsor Executioner as a heavily armed fire support platform one game, then transforming it into a troop transport with flamestorm heavy bolters the next. Magnetizing vehicles empowers you to unleash the full tactical potential of your Primaris Space Marines, making every battle a unique and engaging experience.
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Frequently asked questions
3mm x 1mm or 2mm x 1mm rare-earth neodymium magnets are ideal for weapon swaps on Primaris Space Marines due to their small size and strong hold.
Use 2mm x 1mm magnets in the shoulders and arms, ensuring proper polarity for easy swapping. Drill shallow holes to maintain the model's pose and stability.
Yes, 3mm x 1mm magnets work well for backpacks. Place one magnet in the torso and another in the backpack for a secure fit.
3mm x 1mm or 3mm x 2mm magnets are recommended for heavy weapons to provide enough strength to hold larger components securely.
Use small magnets (2mm x 1mm or 3mm x 1mm) and drill precise holes to keep them hidden. Test fit before gluing to ensure seamless integration.



































