X20A thinner for acrylic paint. 46 ml

The Tamiya X-20A Acrylic Thinner: Precision and Control for Every Layer of Paint

The Tamiya X-20A (ref. TA81030) is the specific thinner formulated by Tamiya for use with its range of acrylic paints. In a compact 46 ml format, it is practical both in the usual workshop and when painting outside the home or during short sessions.

What is X-20A Used For?

The X-20A has two main functions in the workflow of modelling and miniature painting:

• Dilution of Tamiya Acrylic Paints: it allows for adjusting the viscosity of the paint to suit the brush or airbrush, achieving thinner layers, greater coverage control, and better colour transitions.
• Tool Cleaning: it is effective for cleaning the airbrush, brushes, and any surface that has come into contact with Tamiya acrylic paints before they dry completely.

Compatibility

The X-20A is specifically formulated for Tamiya acrylic paints (X, XF, and AS series). Its use with other brands of acrylics — such as Vallejo, Kaleido, or Ammo — may yield variable results, as each manufacturer formulates its own thinners adapted to its chemical base. We recommend using it exclusively with Tamiya acrylic paints to ensure optimal results.

Application Tips

• For brush application, a dilution of 10-20 % of thinner to paint is usually sufficient to improve flow without losing coverage.
• For airbrush use, the typical ratio is around 20-30 % depending on working pressure and paint type. Always adjust on a test surface.
• Add the thinner gradually, mix with circular motions, and check the consistency before applying to the piece.
• Keep the bottle tightly closed after each use to prevent evaporation.
• Work in a ventilated area, although Tamiya acrylics are less aggressive than enamels or lacquers.

Format and Storage

The 46 ml format is ideal for hobbyists who use thinner moderately or want to have a backup bottle in the workshop. The Tamiya bottle includes a hermetic screw cap to extend the product's shelf life. Store it away from heat sources and direct sunlight.

Frequently Asked Questions

Can I use X-20A with acrylic paints from other brands like Vallejo or Ammo?

It is formulated for Tamiya acrylic paints. It may work with other brands, but this is not guaranteed, as each manufacturer develops its thinners adapted to its own chemical base. For Vallejo or Ammo, it is most advisable to use their specific thinners.

Is it also suitable for cleaning the airbrush after painting with Tamiya acrylics?

Yes, this is one of its common uses. Run X-20A through the airbrush after each session to dissolve any residual acrylic paint and facilitate cleaning of the needle and nozzle.

Is X-20A the same product as Tamiya Acrylic Thinner X-20?

Not exactly. X-20 and X-20A are distinct products from Tamiya. X-20A is specifically formulated as a thinner for acrylics and is the most widely used for general purposes. Always check the reference when purchasing to ensure it is the one you need.

How much thinner should I add to the paint for airbrush work?

As a starting point, a ratio of between 20 and 30 % thinner to the total volume of the mixture usually works well. The final adjustment depends on compressor pressure, nozzle diameter, and the specific density of each colour. Always test on a scrap paper or surface before applying to the model or miniature.

Does X-20A alter the drying time of Tamiya acrylic paints?

In moderate proportions, the drying time is similar to that of the paint applied directly. With a higher concentration of thinner, the layer may take slightly longer to dry completely. It is not advisable to accelerate drying with excessive heat to avoid cracking the paint.

Tamiya X-20A acrylic thinner 46 ml — the go-to solvent for Tamiya acrylic paints in scale modelling, miniature painting and diorama work. Ideal for thinning colours for airbrush use, improving brush flow and cleaning tools after each painting session. A reliable choice for modellers working with Tamiya X and XF acrylic ranges.