Spray Primer Army Painter GM3001P, base primer for MDF and polystyrene, 0.3 L

The Army Painter GM3001P Spray Primer is a ready-to-use base primer supplied in a 0.3 L aerosol can, formulated for reliable priming of MDF and polystyrene surfaces used in miniatures, models and terrain. This water-based primer offers a matt, even finish that promotes paint adhesion and coverage, while remaining non-toxic and low-odor. It is compatible with common hobby materials including XPS foam, polystyrene and MDF sheet components and is suitable as the foundational coat before applying acrylic or hobby paints.

Advantages

This primer creates a uniform, matt surface that improves subsequent paint application and reduces the number of paint layers required for full coverage. Its water-based formulation is non-corrosive to building materials and safe for indoor use thanks to low odor and non-toxic properties. The spray format ensures fast, even coverage on complex shapes and textured terrain pieces, saving time during preparation of miniatures and model scenery.

Suitable for

• Priming MDF terrain boards and sheets
• Priming polystyrene and XPS foam scenery components
• Preparing miniatures and small models for painting
• Base-coating large terrain assemblies and modular scenery

Key specifications

• Volume: 0.3 L per aerosol can
• Finish: matt
• Base: water-based formulation
• Safety: non-toxic, low-odor
• Compatibility: suitable for MDF, polystyrene, XPS foam and common hobby materials

How to use

Shake the can thoroughly before use to ensure the primer is well mixed. Apply to clean, dry surfaces at a recommended distance of 20–30 cm using even, sweeping passes. Apply multiple thin coats rather than a single heavy coat, allowing each coat to dry to the touch before applying the next. Ensure adequate ventilation when spraying indoors and protect surrounding areas from overspray. After use, invert the can and spray briefly to clear the nozzle.

Usage recommendations

For best results, test-spray on a scrap piece of the same material to determine optimal distance and layering. Allow full curing time before applying acrylic paints or washes to ensure maximum adhesion and uniform finish.