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Lack of pressure once the nozzle cap is screwed on

Discussion in 'Troubleshooting!' started by Franc Kaiser, Mar 26, 2018.


  1. Franc Kaiser

    Franc Kaiser Mac-Valve Maestro! Very Likeable!

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    That’s unlikely. I only got that one brush, and it comes only with one air cap / tip for a 0.2mm needle. Appreciate the thought, though... it can easily happen, and would make sense as it really appears that the air cannot escape from the tip, as if the hole is too small. Again, I suspect that my sub-par compressor simply cannot provide sufficient power.
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  2. huskystafford

    huskystafford Needle chucking Ninja

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    Crank psi to the max(60psi should be enough/don't know what is recomended for your brush) and reduce color a lot. If paint comes out, then compressor shouldn't be an issue. I shoot with 60psi, I could shoot mayonese probably -.-
    Last edited: Mar 27, 2018
  3. JackEb

    JackEb The Dragon Hunter Staff Member Admin

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    I suspect your compressor is the problem,
    if its similar to the one pictured below then your max pressure will be around the 15psi. which will be less than that once you push for air. which means it cant get enough pressure happening to clear the paint properly through the gun, so you get a build up inside which eventually chokes it.

    15psi is normally the maximum for detail work and the paint (createx illustration) is normally heavily reduced (1 paint: 10+reducer)
    if you watch some you tube videos of the Pro's at work you'll notice they often blast spray off to the side.... its because they're getting a build up of tip dry or the paint is starting to clog.

    You will either need to reduce your paint a LOT more or bite the bullet and get a mini compressor with a tank that can deliver at least 50psi - because when you push the air on the brush you will notice the regulator drop by around 10psi or more.
    upload_2018-3-28_7-55-45.png
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  4. Franc Kaiser

    Franc Kaiser Mac-Valve Maestro! Very Likeable!

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    JackEb: this sums it up pretty much. Yes, it’s one of those compressor that you are referencing. It actually worked ok for a couple of hours with a cheap generic brush, but once I connected the Sparmax brush, 1) the compressor is already “on its way out”, and 2) the higher precision enclosure of the brushes’ air cap simply requires more pressure to operate reasonably. I am getting now a real compressor. Thanks a lot for your feedback (as well as anybody else). I will get back in a couple of days to tell you if the situation has resolved. I owe you that much, that’s for sure.
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  5. JackEb

    JackEb The Dragon Hunter Staff Member Admin

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    maybe theres to much back pressure for the diaphram to cope with and the motor has prematurely overheated.

    Yes, please let us know, its always good for the brains trust :)
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  6. huskystafford

    huskystafford Needle chucking Ninja

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    That on a picture is compressor? -.-
  7. JackEb

    JackEb The Dragon Hunter Staff Member Admin

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    Yes husky, it’s a compressor. Works like a fish tank pump. Primarily designed for fingernail art and cake decorating. Not meant for pressure over approximately 15psi
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  8. huskystafford

    huskystafford Needle chucking Ninja

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    Don't wanna sound rude or insulting, but that thing looks like a toy -.- I didn't even know, they are making such a small ''compressors''.
  9. JackEb

    JackEb The Dragon Hunter Staff Member Admin

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    Yes but ultimately it’s not aimed at an Art person, more Fingernail art and cake decorating. It all comes down to the right tool for the right job.
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  10. AndreZA

    AndreZA Elite Member! Elite Member! Very Likeable!

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    For a joke I bought a "beauty" airbrush off ebay. It was something like $12 with shipping included. That was for an airbrush and a "compressor". The compressor has a normal and a high setting. Only on the high setting did it have just enough power to spray clean water. I'm sure the Neo one is much better but still, they are not compressors, just fish tank pumps.

    beauty_airbrush_sml.jpg
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  11. Franc Kaiser

    Franc Kaiser Mac-Valve Maestro! Very Likeable!

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    The problem is solved. Once I connected a “real” compressor to the brush, it works perfectly. I thoroughly enjoy my new-found range of psi. I am writing this with a big smile on my face. Many thanks to everybody who took some time and gave advise in this forum.
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  12. Jurien72

    Jurien72 Have Airbrush - Will Travel!

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    Woohoo! Glad you got that sorted out

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