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Humbrol Enamels Drying Out

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cml
  • Member since
    March 2007
  • From: Brisbane, Australia
Humbrol Enamels Drying Out
Posted by cml on Saturday, August 2, 2014 7:47 PM

Hi Everyone,

I've used Humbrol Enamels for a number of years for brush painting, normally without any dramas.

However, just recently, i've found at least two of my colours have dried out in the tins - both metallics. They dry out leaving a thick skin across the top. Underneath, they are somewhat recoverable, but i have to peel the skin of each time.

When this first happened a few weeks ago, i cleaned the rim and lip of the tins, thinking that it was the crusty paint causing a poor seal and leaking air in. However, it's still occurred - possible the tin is dented/not sealing as well as brand new?

Any suggestions on how to store them to prevent this. Would storing them upside down stop are slowly leaking in? I've had these tins for about 5-6 years, however, i've still got Testors that are close to10 years old and in perfect condition.

Is this just an issue when dealing with Humbrols?

Chris

  • Member since
    May 2013
Posted by Snibs on Saturday, August 2, 2014 8:31 PM

is the lid and hole clean so it can make a airtight seal?

I see you said that, don't know how I missed it.

There must be air getting in somewhere, put the lid on with a hammer firmly, might take any gaps out.

Some stuff that might be interesting.

https://sites.google.com/view/airbrush-and-modeling/home

On The Bench.

Tiger 1 and Tooheys.

 

  • Member since
    December 2011
Posted by Chrisk-k on Saturday, August 2, 2014 8:38 PM

I always wrap paint bottles with kitchen wrap to prevent air from getting into bottles.

Iwata HP-CS | Iwata HP-CR | Iwata HP-M2 | H&S Evolution | Iwata Smart Jet + Sparmax Tank

cml
  • Member since
    March 2007
  • From: Brisbane, Australia
Posted by cml on Saturday, August 2, 2014 8:52 PM

Snibs - the first time, no. So I cleaned both lid and tin with thinner and scalpel to scrape of all the dried paint, yet the same thing happened.

Chrisk-k - that sounds like a good idea. Might try that.

Chris

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Sunday, August 3, 2014 11:04 AM

If you use enamels of virtually any brand, they will eventually harden over time if you use them several times.  Each time you use it, more fresh air gets in.  I suppose you could use the old photographer's trick of backfilling with a nitrogen spray can, but with film processing going obsolete those cans may be getting hard to get :-(

Don Stauffer in Minnesota

  • Member since
    September 2003
  • From: AandF in the Badger State
Posted by checkmateking02 on Thursday, August 7, 2014 11:53 PM

I usually decant paint from tins (like Humbrol and WEM) into glass bottles.  I'm not a fan of the little tins, although I do like both brands of paint.

Testors makes/sells the bottles and used to market two sizes, but since they dropped Floquil, I can only find the one that is size for Model Master paints.

www.toysrus.com/.../tes50625-mixing-bottles-and-pipettes-te-tes50625-11713558

www.amazon.com/.../B0006MZOQC

www3.towerhobbies.com/.../wti0001p

I even add lacquer thinner when I transfer the paint, and haven't had any issues with it going bad.  Eventually, as Don says, they do dry out, but I've had most of the paint last for years.

 

 

 

 

  • Member since
    January 2010
Posted by CrashTestDummy on Thursday, August 14, 2014 2:03 PM

Store them upside down.  It isn't perfect, and I'd put them in some container, just in case, but that will certainly help.

Gene Beaird,

Pearland, Texas

G. Beaird,

Pearland, Texas

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Thursday, August 14, 2014 2:28 PM

Hello!

Yeah, storing them upside down is the way to go. They now even note the colour number on the bottom to help you. Second thing to watch is for contaminating the paint in the can - most common case is when you brush paint with one colour, wash the brush, and bring small amount of the washing agent into the next can - this can also affect the paint shelve time. I heard the less solvent in the paint the longer it can hold - just thin a small amount you will use for painting and not all the paint you have in the can. Hope it helps, have a nice day

Paweł

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

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