Spray primer Army Painter GM3002P 0.3 L — ready-mixed primer for MDF, polystyrene, universal

Spray primer Army Painter GM3002P 0.3 L is a ready-mixed, universal coloring primer formulated for model-making surfaces such as MDF, polystyrene and similar materials. Supplied in a 0.3 L aerosol can, this water-based primer provides a matt, even base layer that improves paint adhesion for acrylics and enamels while being non-corrosive to common building substrates. The product is designed for hobbyists and terrain builders who require consistent coverage and a neutral foundation for further painting and weathering techniques.

Advantages

The primer delivers uniform coverage with a matt finish, reducing the number of preparatory painting steps. Its water-based formulation is non-toxic and odorless compared with solvent primers, and it is safe for use on delicate materials such as XPS foam, polystyrene and MDF without causing degradation. The ready-mixed aerosol format ensures quick, even application and good surface wetting to enhance subsequent paint adhesion.

Suitable for

• MDF sheets and board terrain construction
• Polystyrene and XPS foam scenery elements
• Plastic model kits and resin parts
• Hobby projects requiring a neutral, matt base coat before acrylic or enamel paint

Key specifications

• Volume: 0.3 L per aerosol can
• Finish: matt
• Base type: water-based primer
• Colour: neutral dark tone (matches Necromancer Cloak Warpaint shade)
• Suitable substrates: MDF, polystyrene, XPS foam, plastic, resin
• Weight (approx.): 352 g

How to use

Shake the aerosol can thoroughly before use and test spray on a scrap material to check spray pattern. Maintain a consistent distance of about 20–30 cm from the surface and apply thin, even coats in sweeping passes to avoid runs or pooling. Allow each coat to dry before applying additional layers; drying time will depend on ambient temperature and humidity. After priming, proceed with acrylic or enamel paints as required.

Usage recommendations

Apply primer in a well-ventilated area and protect surrounding surfaces. For best adhesion on very smooth plastics, lightly abrade the surface with fine sandpaper before priming. Store the can upright at moderate temperature and follow local regulations for aerosol disposal.