WelshZeCorgi Posted October 22, 2018 Share Posted October 22, 2018 I accidently over thinned a bottle of paint, is there a proper way to thicken it back up? Link to comment Share on other sites More sharing options...
Rob G Posted October 22, 2018 Share Posted October 22, 2018 Add more unthinned paint. Or let it stand until the thinner evaporates, but that's hit and miss and usually results in abject failure. 1 Link to comment Share on other sites More sharing options...
WelshZeCorgi Posted October 22, 2018 Author Share Posted October 22, 2018 36 minutes ago, Rob G said: Add more unthinned paint. Or let it stand until the thinner evaporates, but that's hit and miss and usually results in abject failure. Why? What happens if you let it stand? Link to comment Share on other sites More sharing options...
dnl42 Posted October 22, 2018 Share Posted October 22, 2018 If your want to keep your paint in the best condition, only thin the amount of paint you're going to use in a single session. Then discard any excess thinned paint when you're done with the session. Link to comment Share on other sites More sharing options...
bmwh548 Posted October 22, 2018 Share Posted October 22, 2018 Leave the cap off for a while and check on it every now and then. You should be fine. Link to comment Share on other sites More sharing options...
Gorby Posted October 22, 2018 Share Posted October 22, 2018 1 hour ago, dnl42 said: Then discard any excess thinned paint when you're done with the session. I've never done that and never had a problem with reused paint. If I did it would double my paint bill. Link to comment Share on other sites More sharing options...
Jamie @ Sovereign Hobbies Posted October 22, 2018 Share Posted October 22, 2018 This depends entirely on the type of paint and what it has been over thinned with. Link to comment Share on other sites More sharing options...
WelshZeCorgi Posted October 22, 2018 Author Share Posted October 22, 2018 5 hours ago, Jamie @ Sovereign Hobbies said: This depends entirely on the type of paint and what it has been over thinned with. It was Tamiya acrylic paint with tamiya's x20a acrylic thinner. Link to comment Share on other sites More sharing options...
Kev The Modeller Posted October 22, 2018 Share Posted October 22, 2018 There's a good little trick with Tamiya, but it must be done when they're new. Open a new jar and top up with X20A to about 10mm from the top of the jar, I've been doing for a good while now works every time and last as long as the paint does Link to comment Share on other sites More sharing options...
Black Knight Posted October 22, 2018 Share Posted October 22, 2018 If its not too far gone you can try adding Artists Acrylic Medium. Its a white/clear goopy paste which artists add to acrylic paints to give them 'body'. I have a tube and add some to thin acrylic paints which I have bought. It helps a bit. The paste itself dries clear and has no affect on drying time, it merely thickens the paint Link to comment Share on other sites More sharing options...
Kev The Modeller Posted October 22, 2018 Share Posted October 22, 2018 Just buy another jar and use that to reduce thinner ratio, they only cost $2.50 ish. Link to comment Share on other sites More sharing options...
sapperastro Posted October 23, 2018 Share Posted October 23, 2018 Let it stand for a while, stirring it now and again. Tamiya thinner evaporates fast. Link to comment Share on other sites More sharing options...
Steve Noble Posted October 24, 2018 Share Posted October 24, 2018 Quickest way, just buy another bottle and add it to the too thin one. But in future only thin what you need when you need it.. 1 1 Link to comment Share on other sites More sharing options...
RJP Posted October 24, 2018 Share Posted October 24, 2018 The worst possible case seems to be the total loss - of a single bottle of paint. You have already seen the error inherent in guessing the amount of thinner to use. How can you know how much new paint to add to get where you want to be? You would be better off getting a new bottle and using the over-thinned mixture to thin it, rather than the other way 'round. You will lessen the possibility of a repeat that way. Slow and easy works every time. 1 Link to comment Share on other sites More sharing options...
Vladan Dugaric Posted October 26, 2018 Share Posted October 26, 2018 Tamiya acrylic paints are lacquers; they dry by evaporation of solvent, so it is safe to let some of the solvent evaporate. If too much thinner evaporates, you can add more thinner, as it will dissolve even fully dried paint. Enamel paints dry and cure (chemically react with oxygen from air), and cured paint is then not soluble in the thinner in the paint; that makes the paint somewhat or entirely unusable, depending how much of it cured, when adding thinner to gloopy paint will not dissolve it any more. 1 Link to comment Share on other sites More sharing options...
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