Primer paint VALLEJO Steel Grey 18 ml bottle — model 70.630

VALLEJO Primer Paint in Steel Grey (18 ml bottle, model 70.630) is a solvent-based primer developed for hobbyists and model makers to create a consistent, paintable base on plastic, resin and metal surfaces. The formulation promotes adhesion of acrylic and enamel topcoats, reduces the need for multiple finish layers, and yields an even surface texture that improves detail definition on miniatures, scale models and kit parts. The 18 ml bottle is compatible with brush or airbrush application, offering controlled coverage for small to medium-sized projects.

Advantages

The primer provides good adhesion to common modelling substrates and produces a uniform, matt surface that facilitates subsequent painting. Its steel grey tone offers neutral mid-tone coverage that helps to evaluate surface imperfections and enhances shading and highlights during painting. The convenient 18 ml size is practical for hobby use and allows precise dispensing for localized priming or full-part coverage.

Suitable for

• Priming plastic model kits and injection-molded parts
• Preparing resin miniatures and garage-kit components
• Priming small metal parts, photo-etched components and castings
• Base coating before airbrush or brush painting on scale models

Key specifications

• Volume: 18 ml bottle
• Color: Steel Grey (neutral mid-tone)
• Compatibility: formulated for plastic, resin and metal surfaces
• Application methods: suitable for brush and airbrush use
• Finish: matt, providing a paintable surface and improved topcoat coverage

How to use

Ensure surfaces are clean, dry and free of grease or release agents before priming; wash new parts with warm soapy water if necessary and remove mold lines or flash. Shake the bottle well to homogenize the pigment and solvent. For brush application, apply thin, even coats and allow adequate drying between layers. For airbrush use, thin as required following standard thinning practices for solvent-based primers and apply several light passes rather than a single heavy coat to avoid obscuring fine detail. Allow the primer to dry fully before sanding lightly or applying topcoats.

Usage recommendations

Work in a well-ventilated area and use appropriate personal protection when spraying or thinning. Test adhesion on a spare part if working with uncommon plastics or treated surfaces. For best results with delicate details, apply multiple thin coats rather than one thick layer.