Mark Fit for Decals 40ml.

Tamiya Mark Fit: the ultimate solution for perfect decals

Applying a well-positioned decal makes the difference between a correct model and a truly accomplished one. The Tamiya Mark Fit for Decals 40ml (TA87135) is specifically formulated to soften the decal film, allowing it to naturally conform to curved surfaces, riveted panels, seams, and any irregular texture, and to permanently fix it once dry.

What it is for and how it works

Mark Fit acts as both a softening agent and a fixer at the same time. When applied to the wet decal already positioned, the emulsion softens the decal film just enough to mould it to the surface without the need for excessive pressure or risking breakage. Once the moisture has evaporated, the decal visually integrates into the base paint, resulting in a clean finish without the typical "silvering" or "paper" effect that indicates poor application.

• Softens the decal film to adapt it to irregular surfaces.
• Promotes permanent adhesion without the need for additional varnishes.
• Reduces the appearance of bubbles and lifted edges.
• 40 ml format with applicator, convenient for long decal sessions.

Compatibility and applications

Mark Fit is compatible with standard water-slide decals, the most common type found in static model kits, figures, dioramas, and slot. It can be applied over oil, acrylic, or enamel painted surfaces, preferably with a prior coat of satin or gloss varnish to minimise silvering.

Its use is especially indicated in:

• Aviation, armoured, automotive, and naval models.
• Figures and miniatures with insignia or fine decoration decals.
• Dioramas with multiple decorative elements applied as decals.
• Slot car bodies with water-slide decal decoration.

Application tips

To achieve the best results, follow these steps:

1. Apply a coat of gloss or satin varnish before placing the decals; this will facilitate sliding and reduce silvering.
2. Soak the decal in cold water for the time indicated by the kit manufacturer.
3. Slide the decal into position and remove excess water with a cotton swab or absorbent paper.
4. Apply Mark Fit with a brush over the already positioned decal; you will see it slightly wrinkle as the softener acts; this is normal.
5. Do not touch the decal while it is wet. Allow it to air dry.
6. If small wrinkles remain, apply a second coat of Mark Fit once the first is dry.
7. Protect the final result with a coat of varnish of the desired finish.

Frequently asked questions

Is Mark Fit suitable for any type of decal?

It is formulated for water-slide decals, which are used in almost all static model kits, figures, and dioramas. It is not suitable for self-adhesive decals.

Is there a difference between Mark Fit and Mark Softer from Tamiya?

Yes. Tamiya offers several formulas within the Mark range: some are milder softeners and others are more aggressive for surfaces with greater relief. Check the description of each reference to choose the one that best suits your project.

Can I use Mark Fit on acrylic paint without prior varnish?

It is possible, although not recommended. Without prior varnish, the risk of silvering increases and the decal may not slide well. A prior gloss or satin varnish significantly improves the result.

How long does it take to dry?

The drying time depends on the temperature and humidity of the environment, but under normal conditions, the decal stabilises in a few hours. Always wait until it is completely dry before applying the finishing varnish.

Can it be used on slot car bodies?

Yes, it is a common option among enthusiasts who decorate their bodies with water-slide decals. The process is the same as in static models; take special care with mechanical pressure afterwards until the protective varnish is cured.

Tamiya Mark Fit 40ml (TA87135) is a water-slide decal softener and setter designed for scale models, figures, and dioramas. It softens the decal film to conform to curved and textured surfaces, ensuring permanent adhesion without silvering or lifting edges. Compatible with standard acrylic, enamel, and oil-based paint finishes. A go-to product for modellers looking for clean, professional decal results in aircraft, armour, automotive, and slot car bodywork projects.