Paint Vallejo Ammo U-Rust Black Oxide Transparent 40 ml – weathering pigment for rust effects

Vallejo Ammo U-Rust Black Oxide Transparent 40 ml is a weathering paint formulated to create realistic rust and oxidized metal effects on scale models, miniatures and dioramas. The transparent black oxide tone allows modellers to layer the product over base coats to reproduce depth, streaking and subtle corrosion. Supplied in a 40 ml bottle, this paint is compatible with standard modelling brushes and weathering tools and integrates with other Vallejo weathering products for controlled, natural-looking results.

Advantages

The transparent formulation provides buildable, controllable rust tones without obscuring underlying detail or colour. It dries to a consistent finish suitable for subsequent layers, washes or drybrushing. The water-based, alcohol-stable composition ensures easy thinning and cleanup, and the 40 ml size gives a practical volume for repeated weathering tasks. The product is designed to work well on plastic, resin and metal model surfaces when used with standard modelling techniques.

Suitable for

• Creating streaking and oxidised metal effects on military vehicles and armour
• Weathering buildings, industrial structures and diorama scenery
• Detail work on ships, trains and automotive models to simulate corrosion
• Layering over base colours to achieve graduated rust tones and depth

Key specifications

• Type: Transparent weathering paint for rust effects
• Colour tone: Black oxide transparent
• Volume: 40 ml
• Finish: Semi-transparent, suitable for layering
• Compatibility: Suitable for plastic, resin and metal model surfaces
• Application tools: Brushes and weathering tools

How to use

Shake the bottle before use. Apply thin layers with a fine brush or weathering tool to build up rust effects gradually. For streaking, apply a small amount at the highest point of the area and drag downward with a damp brush or sponge to simulate runoff. Allow each layer to dry before adding further transparent layers or complementary pigments. For best control, thin the product slightly with the appropriate Vallejo thinner or water depending on the required flow and translucency.

Usage recommendations

Test on a scrap piece or hidden area first to determine the opacity and drying behaviour on your chosen base colour. Use light, incremental applications to avoid over-saturating fine details. Combine with other Vallejo weathering products such as pigments and washes for a coherent, realistic rust effect.