Hobby paint medium/additive VALLEJO 70.521 – 17 ml plastic bottle, silver finish

VALLEJO 70.521 Metal Medium is a 17 ml acrylic hobby medium supplied in a plastic dispenser bottle and designed to modify the appearance and handling of acrylic paints. Formulated with fine mica particles, it can be mixed with acrylic colours to produce an iridescent silver lustre or applied alone to deliver a controlled metallic sheen. The product is suitable for model making, miniatures and craft projects where a metallic finish and adjusted flow are required.

Advantages

This medium adjusts paint viscosity and improves flow for smoother application without significantly altering drying time. The mica-based formulation provides a consistent silvery iridescence and enhances metallic effects when mixed with standard acrylics. The 17 ml plastic dispenser bottle enables precise dosing and reduces waste during detailed work. It is compatible with water‑based acrylic paints and can be thinned with water for subtle effects.

Suitable for

• Model kits and scale miniatures requiring metallic highlights
• Detail work on figures, vehicles and dioramas
• Craft projects and decorative finishes with an iridescent silver tone
• Layering and glazing techniques to create subtle metallic depth

Key specifications

• Volume: 17 ml
• Base: water‑based acrylic medium with mica
• Finish: silver iridescent/metallic
• Container: plastic dispenser bottle for controlled application
• Compatibility: mixes with acrylic paints; water‑thinnable

How to use

Shake the bottle well before use to ensure the mica is evenly suspended. Add small amounts of the medium to acrylic paint on a palette to achieve the desired metallic intensity and working consistency; mix thoroughly. Apply with a brush or airbrush depending on the dilution and effect required—when airbrushing, strain if necessary and test spray first. The medium can also be applied alone for a translucent silver layer. Allow each coat to dry before adding additional layers or varnish.

Usage recommendations

For best results, start with low ratios of medium to colour and increase gradually to control metallic strength. Store the bottle upright in a cool, dry place and reseal after use to prevent settling. Avoid mixing with solvent‑based products; clean tools with water while the medium is wet.