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Paint Storage

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  • Member since
    October, 2008
  • From: Fullerton, Calif.
Paint Storage
Posted by Don Wheeler on Tuesday, April 04, 2017 3:19 PM

There was a recent thread about how to store paint without it going bad.  I''ve been doing some more experimenting.  You can read about it at the bottom of this page where it says Even more Postscript.  Comments or suggestions are welcome.

Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Now also an Amazon E-book of tips.

  • Member since
    May, 2013
Posted by Snibs on Tuesday, April 04, 2017 3:59 PM

Aint science great Don,

tried a few experiments myself over time but never a rubber pad, I have to wonder if there is a point when the volume of air trapped in the bottle is more than the paint volume left it's in trouble no matter how good the seal is. Touch wood I rarely loose a paint but it's normally pretty low when I do and I'm obsessed with being clean.

Keep in mind that if you have to buy more paint you have to go to a model shop to get it if you follow my drift here Don Big Smile

Mick.

My airbrush and modeling page.

Two cheap spray booths compared, the BD-512 and HS-E420DC

On The Bench.

USS Voyager.

F/A-18A. 

 

  • Member since
    October, 2008
  • From: Fullerton, Calif.
Posted by Don Wheeler on Tuesday, April 04, 2017 4:44 PM

Good point about the low paint, Mick.

Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Now also an Amazon E-book of tips.

  • Member since
    December, 2015
Posted by Miatatom on Wednesday, April 19, 2017 8:29 PM

My method of sealing paint up is to use a piece of Press N Seal. I think Glad makes it. Clean the rim of the jar with lacquer thinner, wipe it dry with a paper towel and use a piece of Press N Seal large enough to cover the opening. Screw the lid on and it's sealed up.

However, that won't keep the paint from evaporating. If there's any air in the jar, it'll cause the paint to dry up. The only way to reduce the amount that's evaporated is to fill the container as full to the top as possible with paint. IOW, don't leave any space in the container for air. Obviously, that's not always possible. If you can figure a way to vacuum seal the container, then you might slow the evaporation rate. Once paint is opened, it's going to evaporate.

Tom Shirley

  • Member since
    February, 2006
  • From: Boston
Posted by Wilbur Wright on Monday, April 24, 2017 6:01 PM

I used to keep MM enamel bottles upside down to seal out the air.  It generally works for a while then it stills turns to gum.   Humbrol cans  are all sealed with tin foil and that works for a while then they turn to sludge.

Interestingly I've never had a problem with Tamiya acrylics.  The clear paint base rises above the paint and keeps it fresh.  Anyone with Tamiya on the shelf can look and see this.

 

Models are so expensive these days it's no wonder there are no kids getting involved.

I've resigned myself to the fact that a new model means a budget for new paint.   The new AK Extreme metals are almost $10 for 30ML  ...thats about $1300. dollars a gallon, and I thought Sherwin Williams was expensive.

 

There is no silver bullet here for saving model paint.   All we can hope to do is prolong the inevitible.

  • Member since
    October, 2008
  • From: Fullerton, Calif.
Posted by Don Wheeler on Monday, April 24, 2017 6:41 PM

Miatatom

However, that won't keep the paint from evaporating. If there's any air in the jar, it'll cause the paint to dry up. The only way to reduce the amount that's evaporated is to fill the container as full to the top as possible with paint. IOW, don't leave any space in the container for air. Obviously, that's not always possible. If you can figure a way to vacuum seal the container, then you might slow the evaporation rate. Once paint is opened, it's going to evaporate.

 

 
You can see my experiment with vacuum seal here.  I think in combination with the rubber gasket it might work.
 
Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Now also an Amazon E-book of tips.

  • Member since
    April, 2016
Posted by GlennH on Thursday, April 27, 2017 4:10 PM
Just found some Testors I have that's marked 19 cents that is still good! I don't know if it's the bit of air trapped in the bottle is as much an issue as air changes. I've stored house paints for years upside down and they are fine. Maybe the experimenters can try dipping the top of the jar in melted wax and see how that seals.

A number RVN scans from hundreds yet to be done:

https://www.flickr.com/photos/southwestdreams/albums/72157621855914355

Have had the great fortune to be on every side of the howitzers.

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