Paints for Model Kits

Paints for model kits

Painting adds colour, depth and realism to a model. The result depends on surface preparation, paint type, thinning, application method and drying time. The three major families used in scale modelling are acrylics, enamels and lacquers.

Why painting matters

Paint reproduces the materials and finish of the real subject, helps unify parts made from different colours of plastic and prepares the model for decals and weathering. A careful finish begins with clean, properly prepared surfaces.

Acrylic paints

“Acrylic” covers several different formulations. Some are water-based, while others use alcohol or proprietary solvents. Always use the thinner and cleaner recommended for the exact range.

Advantages

Fast drying.
Generally less odour than solvent-heavy paint.
Convenient cleaning for water-based ranges before curing.
Wide colour selection for brush and airbrush work.

Limitations

Paint can dry quickly on the brush or airbrush needle.
Some ranges require careful surface preparation for good adhesion.
Compatibility and thinning differ between brands.

Enamel paints

Enamels are solvent-based paints that usually remain workable longer and can level smoothly.

Advantages

Longer working time for brush painting.
Smooth finish when correctly applied.
Useful for certain washes and detail techniques.

Limitations

Strong odour and need for suitable ventilation.
Cleaning requires the correct solvent.
Longer drying and curing times.

Lacquer paints

Lacquers are valued for fast drying, fine layers and a durable finish, particularly with an airbrush.

Advantages

Strong adhesion and resistance when applied correctly.
Fine, smooth finish.
Fast drying between light coats.

Limitations

Powerful solvents and significant fumes.
Requires effective ventilation and suitable protective equipment.
Can attack underlying paint or plastic if used too heavily or with incompatible products.

Brush painting

Mix the paint thoroughly.
Thin it according to the manufacturer's guidance.
Use a suitable brush and avoid loading it up to the ferrule.
Apply several thin coats rather than one thick coat.
Allow each layer to dry before the next.
Avoid repeatedly brushing acrylic paint once it begins to set.

On larger surfaces, controlled strokes and correctly thinned paint help reduce brush marks.

Airbrushing

An airbrush can produce thin, even coats, soft camouflage edges and controlled shading. Results depend on paint viscosity, air pressure, nozzle size, distance and trigger control. Test the mixture before spraying the model. Use a spray booth or effective extraction appropriate to the paint and wear suitable protection.

Thinning paint

Thinning improves flow and helps control coat thickness. There is no universal ratio: it varies with the paint range, age of the paint, nozzle, pressure and technique. Begin with the manufacturer's recommendations and adjust on a test surface. Incompatible thinner may cause clumping, poor adhesion or a damaged finish.

Primer

Primer reveals scratches and imperfect joints, creates a uniform base colour and can improve paint adhesion. Apply it in light coats over a clean surface. Primer does not replace sanding or repair: defects visible before colour coats should be corrected first.

Finish types

Matt: low reflection, often used on military and weathered subjects.
Satin: restrained sheen suitable for many painted surfaces.
Gloss: reflective finish used for polished subjects and often as a smooth base for decals.

A final varnish can adjust the sheen and protect paint or weathering, provided the products are compatible.

Metallic paints

Metallic finishes show every surface defect. Careful sanding, a suitable undercoat and thin, even application are important. Different metallic shades can distinguish panels without excessive contrast.

Weathering effects

Washes, filters, dry brushing, pigments, chipping and streaking can suggest use and exposure. Work gradually and refer to photographs of the real subject. Test compatibility between base coat, varnish and weathering products before applying them to the model.

Common beginner mistakes

Applying a coat that is too thick.
Using an unsuitable or inconsistent thinner.
Trying to achieve full coverage in one pass.
Handling paint before it has cured.
Spraying without proper ventilation.
Mixing incompatible paint systems without testing.

Storing model paints

Close containers carefully, clean paint from the rim and store them upright away from heat, frost and direct sunlight. Label mixed colours and keep all products out of reach of children. Follow local rules for solvent and paint disposal.

Conclusion

Acrylic, enamel and lacquer paints can all produce excellent results when used for suitable tasks. Prepare the surface, choose compatible products, apply thin coats and allow enough drying time. Testing first is the safest way to refine a paint system.