Airbrush Help

  1. #1

    Airbrush Help

    So, I started painting my armour plates last night, and aside from some issues with getting an even coat (something I'm struggling with in particular with Humbrol greens), I was happy with it for a first coat. So I come back today, crack open my Green 117 and start working on the ab plate. But, despite using the same pot and the same paint/thinner ratio, I noticed I was getting a lot of frosting and the colour was significantly lighter when dried. I thought I'd put in too much thinner, so I tested with less, and continued until I was using way less thinner than I should be and I was still getting horrible frosting. Can anyone shed some light on this? Has my pot of paint gone bad overnight?

    Here's a picture of the issue although I don't know whether you'll see it clearly, but you can definitely see the colour difference.
    armour-11-jpg

    What's going on? and does anyone have any advice for Humbrols? Blues, reds, even yellows go through my airbrush fine, but Green 78 and 117 so far have given me terrible coverage.

  2. #2
    High Speed Low Drag Fett 4 Real's Avatar
    Member Since
    Jan 2010
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    USAF Utah
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    5,382

    Re: Airbrush Help

    Could be a bad batch? How are you mixing the paint? Stirring it up with a machine? or shaking it? the paint can settle and get thick at the bottom....

  3. #3

    Re: Airbrush Help

    I tend to shake it first, then stir it if it sounds a bit runny. It does seem a little thicker than it did last night though, so maybe that's it.

  4. #4
    Jigglenomicon's Avatar
    Member Since
    Mar 2013
    From
    Denmark
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    169

    Re: Airbrush Help

    Had a similar experience when painting my helmet.
    I think it came down to the paint being fairly old.



    You could try to thin it a tad more but you might have to paint more than one layer to cover it.

    Edit : Forgot to mention heat can also affect the consistency of the paint, ie. if its really hot the paint starts drying as it exits the gun and that can create a "powder" effect on the subject.
    Last edited by Jigglenomicon; Jul 8, 2014 at 2:31 PM.

  5. #5
    High Speed Low Drag Fett 4 Real's Avatar
    Member Since
    Jan 2010
    From
    USAF Utah
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    5,382

    Re: Airbrush Help

    If you don't have an electric stirrer look into it.

  6. #6

    Re: Airbrush Help

    I definitely consider one if it helps.

    I bought a couple more tins of 117 yesterday and put them through the airbrush. After re-priming, no more frosting, although the green is a lot greener than before.
    armour-12-jpg
    Possibly due to a thicker coat, but if it persists, I think I'll tone down the green with the black misting on the ab plate, and possibly green 78 misting on the pec plates.

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