Shelf life of thinned Enamel paints.

Discussion in 'Painting Questions, Tutorials and Guidebooks' started by Robert Porter, Sep 15, 2016.

  1. Robert Porter

    Robert Porter Active Member

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    I have on occasion, more often than I would perhaps like to admit, made too much paint to use with my airbrush for the current job. My question is, if I store the thinned paint, in this case enamel in a reasonably airtight container, I use small glass jars, how long is it usable?

    I do not want to take a chance on gumming up an airbrush and the paint and thinner are relatively inexpensive so storing to conserve is more a matter of my waste not want not mentality.

    Any thoughts or experiences to relate? My normal ratio is 50/50 paint vs thinner. In this specific case its Testors Model Master paint using Testors own formulated thinner.

    Thanks in advance.
     
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  2. Wurger

    Wurger Siggy Master
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    I think it depends on the air temperature you are going to store the thinned colour and how much tightly the container is closed. I use the Humbrol enamels and have been able to keep a can of thinned dope in a cold place for a quite long time..
     
  3. Robert Porter

    Robert Porter Active Member

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    My average house temperature is 72 degrees F, with low humidity. The jar is fairly air tight, I store liquid glue in the same type of jar with no issues, for as long as a year.

    I guess a little experimentation is in order!
     
  4. T Bolt

    T Bolt Well-Known Member

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    I use Model Master enamels and the few times I've tried to save some paint thinned with their airbrush thinner it did not last. I now try to mix only what I will use at that time right in the airbrush cup. I have added their regular thinner to bottles of paint that were starting to get thick and that worked well but I have not used the regular thinner for airbrushing.
     
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  5. Wurger

    Wurger Siggy Master
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    My average house temperature is abot 19-23C what ia about 66-73F depending of a year period. So if there is a colder area in your house it should work.
     
  6. Robert Porter

    Robert Porter Active Member

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    Thanks! I found a nice cool spot, at least for the summer months, in my A/C cabinet to try.
     
  7. Robert Porter

    Robert Porter Active Member

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    That is the path I am most likely to follow. I too have had bad luck with airbrush specific thinners but very good luck with same vendor standard thinners.
     
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