
Tamiya Acrylic Paint Mini X-21 Flat Base
X-21 Flat Base isn't a paint on its own — it's the clever additive that turns gloss or semi-gloss Tamiya acrylics matt. Mix in a little to knock back the shine exactly as much as you want, giving you full control over your final finish.
At a glance
- Matting additive (not a colour)
- 10ml glass jar
- Mixes into Tamiya acrylics; thins with X-20A
- Part of the Tamiya X range
Best for
- Reducing gloss and semi-gloss finishes to matt
- Dialling in a custom sheen
- Flattening clear coats
Total control over your final sheen. Works hand in hand with the Tamiya X and XF acrylics you already use.
Original: $4.02
-65%$4.02
$1.41More Images

Tamiya Acrylic Paint Mini X-21 Flat Base
X-21 Flat Base isn't a paint on its own — it's the clever additive that turns gloss or semi-gloss Tamiya acrylics matt. Mix in a little to knock back the shine exactly as much as you want, giving you full control over your final finish.
At a glance
- Matting additive (not a colour)
- 10ml glass jar
- Mixes into Tamiya acrylics; thins with X-20A
- Part of the Tamiya X range
Best for
- Reducing gloss and semi-gloss finishes to matt
- Dialling in a custom sheen
- Flattening clear coats
Total control over your final sheen. Works hand in hand with the Tamiya X and XF acrylics you already use.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
X-21 Flat Base isn't a paint on its own — it's the clever additive that turns gloss or semi-gloss Tamiya acrylics matt. Mix in a little to knock back the shine exactly as much as you want, giving you full control over your final finish.
At a glance
- Matting additive (not a colour)
- 10ml glass jar
- Mixes into Tamiya acrylics; thins with X-20A
- Part of the Tamiya X range
Best for
- Reducing gloss and semi-gloss finishes to matt
- Dialling in a custom sheen
- Flattening clear coats
Total control over your final sheen. Works hand in hand with the Tamiya X and XF acrylics you already use.













