New Airbrush not painting | minipainting | Page 1

scenic flame May 5, 2024, 11:37 AM

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So I have never been able to airbrush even though I have tried using an airbrush for the last year. I messed up by using an Oil based acrylic which clogged my airbrush. I recently got a new head but it isn’t spraying and I do not know what to do. I use 25 psi and pour acrylic paint directly in the cup and then equal amount thinner. I use Army Painter brand and Vallejo thinner. What should I do? Should I change psi, how much thinner to acrylic and do I have to adjust something - there are two screws on the airbrush?

rotund musk May 5, 2024, 11:38 AM

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I have found that my best route for figuring out how much to thin the paint, is go to the extremes with thinner, then slowly back off.

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For army painter, I do 1-1 Vallejo thinner to paint, and a couple drops of flow improver.

scenic flame May 5, 2024, 11:41 AM

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rotund musk For army painter, I do 1-1 Vallejo thinner to paint, and a couple drops of flow ...

Do you mix in a cup then pour into the airbrush cup?

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And what psi?

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Also could it not be spraying because of the screws maybe too tight or too loose because the nozzle and the needle is clean?

rotund musk May 5, 2024, 11:43 AM

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I mix right in my airbrush, doing thinner and flow improver, then paint, and then back flushing. However, I have a different airbrush, so I would recommend mixing it separate. And I do about 25 psi

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Tbh I’m not familiar with that style of airbrush. I’m thinking the front screw may be related to paint flow though.

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Hard to tell without taking it apart myself.

scenic flame May 5, 2024, 11:44 AM

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Hmm ok thx

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What does the back screw do?

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The button for the airbrush feels more tight as i screw it

rotund musk May 5, 2024, 11:47 AM

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Back screw holds the airbrush needle in the retracting mechanism

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Ok so it’s an adjustment then

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So it gives you more or less travel in the trigger. It lets you dial in to do fine spray if you don’t have great manual trigger dexterity

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My brush has it too

outer vigil May 5, 2024, 12:35 PM

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Does it spray pure water ok?

scenic flame May 5, 2024, 1:15 PM

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Ill try that and get back

vestal laurel May 5, 2024, 1:18 PM

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Yeah try pure water, and try adjusting tye valve under the cup.

scenic flame May 5, 2024, 1:44 PM

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ok thx ill do that

scenic flame May 6, 2024, 1:52 PM

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vestal laurel Yeah try pure water, and try adjusting tye valve under the cup.

Ok so it sprays water just fine

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Only thing left is because of the paint then

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Ok I GOT IT WORKING FINALLY IT WAS THE BOTTOM SCREW FOR FLOW

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it is spraying way too hard thoe at 25 psi and im trying to paint some cotton

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Should i adjust the screw under it again or drop the psi or move the brush further away

rotund musk May 6, 2024, 2:13 PM

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Can do a combination of all. If you’re doing fine work, drop the PSI a bit, and practice fine trigger control. Or use that screw on the back to avoid pulling the trigger back too far.

scenic flame May 6, 2024, 2:54 PM

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ok thx a lot the cotton gets pushed hella away but most important is that the brush is now working so ill get on going and trying

rotund musk May 6, 2024, 2:55 PM

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Some tweezers or something to hold it may be in order

vestal laurel May 6, 2024, 3:42 PM

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25psi on the compressor is fine. Just use the MAC-Valve (the on under the airbrush) to adjust the pressure.

#New Airbrush not painting