I have here a Tamiya Enamel (Red). I added some thinner into it but I think I've overdone it. Now, the paint flows like a red juice! Now, how do I reverse the process and thicken it a little?

Leave the bottle uncovered for a period of time and some of the thinner will evaporate. You will need to keep en eye on it though so that it doesn't dry out completely.

Hi there

I've read that, as a rule, you shouldn't add thinners to paint in its pot or jar. Apparently, it can upset the chemical balance of the paint and cause it to dry up or separate out. Always transfer the paint you need to a palette or cup and thin it as necessary there.

Hope this helps

Rowan