
Magnetizing miniatures is a popular technique among Warhammer 40,000 enthusiasts to enhance versatility and customization, and Primaris Aggressors are no exception. These heavy-hitting Primaris Space Marines wield powerful flamestorm gauntlets or autocannons, making them a valuable asset on the battlefield. By magnetizing Primaris Aggressors, players can easily swap between weapon options without needing multiple models, saving both time and resources. This method involves embedding small magnets in strategic locations, such as the wrists or weapon mounts, allowing for seamless transitions between flamestorm gauntlets and autocannons. While the process requires precision and careful planning, the end result is a highly adaptable unit that can be tailored to various tactical situations, making magnetization a worthwhile endeavor for any dedicated hobbyist.
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What You'll Learn

Magnet Size Options
Choosing the right magnet size for Primaris Aggressors is crucial for balancing stability, poseability, and ease of assembly. 1/16-inch (1.5mm) diameter magnets are a popular choice among hobbyists due to their small footprint and sufficient strength for holding weapon arms or shoulder pads. These magnets are discreet enough to hide within the model’s joints without compromising aesthetics, making them ideal for areas like wrists or elbows where precision is key. However, their smaller size requires careful drilling and placement to avoid weakening the plastic.
For larger components, such as heavy weapon assemblies or backpack mounts, 3/32-inch (2.4mm) diameter magnets offer a stronger hold without significantly increasing the magnet’s physical presence. This size strikes a balance between strength and practicality, ensuring that heavier parts remain securely attached during gameplay. When using these magnets, ensure the receiving holes are deep enough to accommodate the magnet while leaving room for glue or filler to secure the surrounding plastic.
1/8-inch (3mm) diameter magnets are overkill for most Primaris Aggressor applications but can be useful for magnetizing exceptionally heavy or awkwardly balanced components, such as custom weapon conversions or scenic bases. Their larger size provides maximum holding power but requires more substantial modifications to the model, including wider holes and potential reshaping of the surrounding area. Reserve these for specialized projects where stability outweighs the need for subtlety.
When selecting magnet sizes, consider the thickness as well as the diameter. 1mm-thick magnets are standard for most applications, providing enough strength without adding unnecessary bulk. For tighter spaces, 0.5mm-thick magnets can be used, though they sacrifice some holding power. Always test the magnet’s fit before gluing it in place, ensuring it sits flush and doesn’t interfere with the model’s movement or pose.
Finally, neodymium magnets are the material of choice for their strength-to-size ratio. Avoid ceramic or ferrite magnets, as they lack the necessary power for miniature magnetization. When drilling holes for magnets, use a pin vise with a drill bit slightly smaller than the magnet’s diameter to ensure a snug fit. Apply a small amount of superglue or epoxy to secure the magnet, but avoid excessive glue, as it can expand and dislodge the magnet during curing. With the right size and technique, magnetizing Primaris Aggressors becomes a seamless enhancement to both their versatility and durability.
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Weapon Arm Magnetization
Magnetizing Primaris Aggressors’ weapon arms is a practical solution for players who want flexibility in their army builds. By embedding small magnets in the arms and torso, you can swap between flamestorm gauntlets, boltstorm gauntlets, or other future weapon options without gluing models permanently. This method preserves the dynamic posing of the Aggressor model while allowing tactical adaptability on the tabletop.
To begin magnetizing weapon arms, gather 3mm x 1mm neodymium magnets, a hobby knife, and super glue. Carefully drill a 3mm hole in the shoulder socket of the torso and a corresponding hole in the base of each weapon arm. Insert magnets with opposite polarities to ensure a secure fit. Test the polarity before gluing to avoid repelling connections. This process requires precision, as the magnets must align perfectly to maintain the model’s pose and stability.
One common challenge is maintaining the aesthetic integrity of the model. To address this, paint the magnets before insertion to match the surrounding armor. Additionally, use green stuff or modeling putty to conceal any gaps around the magnet joints. For players new to magnetization, start with a single arm to practice before committing to all four. This minimizes the risk of damaging the model during the learning curve.
Compared to pinning, magnetization offers a cleaner, more reliable connection for heavy weapon arms. While pinning requires precise drilling and can weaken the plastic, magnets provide a strong bond without altering the model’s structural integrity. However, magnets add slight bulk, so ensure the holes are deep enough to avoid visible protrusions. For Primaris Aggressors, this method is particularly effective due to their large, flat shoulder pads, which provide ample space for magnet placement.
In conclusion, weapon arm magnetization for Primaris Aggressors is a worthwhile investment for players seeking versatility. With careful planning and execution, you can achieve seamless weapon swaps without compromising the model’s appearance. While the process demands patience, the tactical advantages and longevity of the model make it a valuable skill for any Warhammer 40k hobbyist.
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Backpack Magnet Compatibility
Magnetizing Primaris Aggressors’ backpacks requires careful consideration of size, placement, and material compatibility. Neodymium magnets, typically 1mm or 2mm in diameter, are ideal due to their strength in small form factors. Ensure the backpack’s connection points align with the torso’s magnetized areas, using a drill bit matching the magnet size for precision. Epoxy glue, applied sparingly, secures magnets firmly without compromising the model’s integrity. Test the polarity of each magnet pair before final assembly to guarantee seamless attachment and detachment.
The backpack’s design influences magnetization feasibility. Primaris Aggressors’ backpacks often feature flat surfaces near the connection points, making them conducive to magnet embedding. However, the proximity of intricate details or thin plastic sections may limit magnet size or require additional support. For example, if the backpack has a raised emblem near the connection point, consider offsetting the magnet slightly to avoid visible interference. Always dry-fit the magnets before gluing to ensure they don’t obstruct aesthetic elements.
Material choice is critical for long-term durability. Neodymium magnets, while strong, can corrode if exposed to moisture, so apply a thin coat of clear nail polish or varnish to protect them. Alternatively, use ceramic magnets, which are less prone to corrosion but slightly weaker. The backpack’s plastic material, typically polystyrene, bonds well with epoxy but may crack under excessive force. To mitigate this, drill pilot holes slightly smaller than the magnet size and fill gaps with putty if necessary.
Practical tips streamline the magnetization process. Use a magnetizer tool to ensure consistent polarity across all magnets, reducing trial-and-error during assembly. Label each magnet pair with a marker or tape to avoid confusion. For multi-weapon configurations, color-code magnets or their surrounding areas to match specific loadouts. Finally, store magnetized models in rigid containers with foam padding to prevent accidental detachment during transport. These steps enhance both functionality and longevity.
Comparing magnetized backpacks to traditional assembly reveals distinct advantages. While static gluing offers permanence, magnetization allows for dynamic posing and weapon swaps, ideal for players adapting to different game scenarios. However, magnetized models require more meticulous handling and initial setup time. For Primaris Aggressors, the ability to swap backpacks for different weapon configurations—such as flamers or boltstorm gauntlets—justifies the effort. Ultimately, the choice hinges on prioritizing versatility over simplicity.
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Base Stability Solutions
Magnetizing Primaris Aggressors requires careful attention to base stability, as the model’s weight and dynamic pose can compromise balance. A wobbly base not only detracts from the miniature’s visual appeal but also risks damage during gameplay. To address this, consider embedding a 3mm neodymium magnet (N35 grade or higher) into the base itself, ensuring it aligns with the model’s feet or central torso. Use a 2-part epoxy adhesive to secure the magnet, allowing 24 hours for curing to achieve maximum bond strength. This method distributes the model’s weight evenly, reducing tipping hazards while maintaining magnetic functionality.
An alternative approach involves integrating a steel washer into the base to act as a counterweight. Choose a 20mm washer with a thickness of 1–2mm, embedding it directly beneath the model’s feet using green stuff or milliput. This technique not only stabilizes the miniature but also enhances its magnetic connection when paired with a base-mounted magnet. For added durability, apply a thin layer of PVA glue around the washer’s edges to prevent shifting during the sculpting process. This solution is particularly effective for Primaris Aggressors due to their heavy weaponry and forward-leaning stance.
For gamers seeking a modular base design, consider a two-part system: a magnetic base plate and a detachable scenic insert. Cut a 3mm cork sheet to match the base size, then embed a 2mm magnet into both the cork and the model’s base. This allows for easy removal of the scenic insert during transport while maintaining stability during play. Ensure the magnets are polarized correctly to avoid repulsion. This method is ideal for players who frequently travel with their miniatures and prioritize both aesthetics and practicality.
Lastly, address stability issues by reinforcing the model’s connection to the base with a pin-and-socket system. Drill a 1mm hole through the model’s foot and into the base, inserting a brass rod for added structural support. Combine this with a magnet for dual stability and magnetic functionality. This hybrid approach is especially useful for larger Primaris Aggressors or models with extended weaponry, as it minimizes stress on the magnet alone. Always test the model’s balance before final assembly to ensure optimal stability.
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Painting Magnetized Models
Magnetizing Primaris Aggressors allows for versatile weapon configurations, but painting these models introduces unique challenges. Unlike static assemblies, magnetized parts require careful planning to ensure seamless color transitions and avoid visible gaps. Begin by identifying the areas where magnets will be placed, typically at the weapon mounts and arms. Use small, strong magnets (1.5mm to 2mm in diameter) to minimize interference with the model’s aesthetics. Before gluing magnets, test-fit the parts to ensure proper alignment and mobility. Once magnets are secured, prime the model with a thin, even coat of spray primer, ensuring coverage in all crevices. This foundation will help paint adhere uniformly, even around magnetized joints.
When painting magnetized Primaris Aggressors, prioritize modularity without sacrificing cohesion. Paint each weapon and arm assembly separately before attaching them to the body. This approach allows for detailed work on individual components without risking damage to completed areas. Use a consistent color scheme across all parts to maintain visual unity, even when configurations change. For example, if the model’s base color is Ultramarines blue, ensure all magnetized weapons and arms share the same shade. Highlighting and shading should follow the same logic, with consistent light sources applied to all parts. This method ensures the model looks polished regardless of the weapon loadout.
One common mistake when painting magnetized models is neglecting the magnetized surfaces themselves. Exposed magnets can disrupt the model’s appearance if left unpainted. To address this, paint the magnets to match the surrounding area before assembly. Use a small brush and thin layers of paint to avoid clogging the magnetic surface. Alternatively, embed magnets in holes slightly larger than their diameter, allowing for a thin layer of putty or paint to conceal them. This technique ensures the magnets remain functional while maintaining the model’s visual integrity.
Finally, consider the long-term durability of your painted, magnetized Primaris Aggressors. Handle the model carefully to avoid chipping paint around the magnetized joints. Apply a matte varnish to protect the paint job, focusing on high-contact areas like weapon mounts. Store the model in a secure case or foam tray to prevent parts from detaching during transport. With proper care, your magnetized Primaris Aggressors will remain both functional and visually striking, ready for any battlefield scenario.
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Frequently asked questions
Yes, Primaris Aggressors can be magnetized to allow for interchangeable weapon options, such as the flamestorm gauntlets or boltstorm gauntlets.
Small magnets, typically 1.5mm or 2mm in diameter, are recommended for securing the weapon arms and gauntlets without compromising the model’s stability.
Magnetizing Primaris Aggressors is moderately challenging but manageable for beginners with basic modeling skills. Following a guide and practicing on spare parts can help.
If done correctly, magnetizing should not significantly affect the pose or stability of Primaris Aggressors. Proper placement and minimal drilling ensure the model remains secure and visually intact.
































