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De-gassing decanted spray paints

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  • Member since
    December 2015
Posted by Mk10 on Sunday, February 21, 2016 5:33 PM

Roger that.

It's worked really well for me. That way, I have no worries that all the "gas" has been allowed to escape, without letting any moisture escape from it. Neart the end, after a couple hours, I can generate some more gas by shaking it a bit, or banging it on the counter just a bit. 

Then after a bit it stops generating bubbles completely, and I put it in a glass container with screw top. For the first couple days, if I think about it, I'll crack the tops to let any residual gas out, but there's nothing really there to speak of. 

I like the idea of getting the paint to body temp. Especially in the winter months. 

Good stuff!

  • Member since
    June 2010
Posted by 5-high on Thursday, February 18, 2016 8:42 PM

Mk10 that's a good idea. I'll have to give it a go ....what I do is use a old tamiya 10mm paint bottle. Once I've decanted the paint I put the lid on just enough to cover ..but leaving it losely on ..as the gas escape it'll lift the lid off the rim of the bottle. .I also do this ...once I have decanted the paint .the paint is cold so I'll speed up the process by holding it in my warm hands this makes it boil faster than letting it stand on the bench. When the boiling slows I place the lid on it as said before. Let it sit for an hour then I screw the lid tight ..give it a good shake. .if you hear a Phsss when you OPEN IT VERY SLOWLY. ..it's not ready to airbrush. I usely wait a day with the lid losely on .paint won't dry ..when it stops phissing it's ready ..no thinning necessary hope this helps 

5-high 

  • Member since
    May 2011
  • From: Honolulu, Hawaii
Posted by Real G on Thursday, February 18, 2016 6:25 PM

I will sometimes put a piece of tape or food wrap over the container while waiting for the propellant to outgas.  When the bublbing stops, I peek inside, swish the container around a bit to make sure there are no more bubbles, then use in the AB.  HTH

“Ya ya ya, unicorn papoi!”

  • Member since
    July 2013
  • From: Chicago area
Posted by modelmaker66 on Thursday, February 18, 2016 4:19 PM

following youtube vids on decanting spray paint is the only way. it will not solidify as long as the dispensed paint is gathered in a container wher it can pool up. Look at the decanting spray paint vids on the net. It works.

  • Member since
    December 2015
De-gassing decanted spray paints
Posted by Mk10 on Sunday, January 3, 2016 2:34 AM

Please pardon me if I'm stating the obvious. I'm a rookie, new to airbrushing, dumb as a box of rocks, and apologize in advance if I'm writing about something that everybody knows, has already been said a ga-jillion times, etc.

I did a search, but didn't see this specifically mentioned in the posts I saw.

I was wondering how I might de-gas some primer I'm having problems with. Using it out of the can isn't working for me, and I wanted to try in the AB. It seems to dry really fast, and I was worried that while I was allowing the propellant to dissipate, it might actually start to "set up" a bit. 

The problem was then, how to allow gas to escape, but keep air out at the same time?

Then I thought of how I tried to make wine out of apples when I was a kid. Same thing as brewing your own beer, etc. 

I "decanted" it into a glass jar using all the methods I read about. Then, I drilled a hole in the metal lid, and ran some plastic tubing through it. I sealed it nicely with epoxy so I knew it wouldn't leak through where the hose goes in. 

Then, I ran the hose into a glass of water. Sure enough, she started a-bubblin'. It seems to work pretty well. I'm going to try it in a bit here, as the bubbles seem to have stopped, but I'll probably let it sit overnight just for kicks-n-giggles before putting it in another glass bottle. At least I know it won't dry out. 

We'll see...

Anyway, thought that might be an interesting idea to share, and again, sorry if it's been covered before, I'm quadruple-posting, everyone already knows how to do it, etc.

Thanks, and I appreciate the forum.

Mk

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