What can I use (that is readily available in the UK) to thin acrylic paints such as those sold by Tamiya.
If I use plain water I find the water miniscus (sp!) causes the paint to bead rather than flow.
For small areas I have had some success with adding a small amount of houshold detergent (washing up liquid) to the water. This breaks up the miniscus and works fine on small areas.
However, I have found that when attempting to cover larger areas (particularly flat ones) the finish is often ruined because the detergent cause bubbles to form in the paint.
Any suggestions welcome.
Cheers,
Nigel