For Every Airbrush Artist!

Ready to get involved? Register for free and you won't see any google advertising!

Register

How I know my air pressure and paint is correct

Discussion in 'How to Control an Airbrush' started by AndreZA, Oct 3, 2016.


  1. AndreZA

    AndreZA Elite Member! Elite Member! Artist of the Month!

    Joined:
    Feb 28, 2012
    Messages:
    4,897
    Likes Received:
    4,606
    Trophy Points:
    126
    Location:
    Johannesburg, South Africa
    I ALWAYS use a drop of water and a drop of medium/transparent base in my paint. Then a drop of paint if I want transparent and 2 drops if I want opaque. A quick spray at 2 bar and see how it covers. Too opaque, I use medium. Too transparent I use paint. Try again until I get close.

    Then it's time to work on flow. I turn Mac valve shut and pull back trigger till where I want to see paint start spraying. I slowly start to open the Mac valve until it starts spraying. When pressure gets too high for my liking, I start adding water. This does change opacity too, but coverage at low pressure gets better the closer you are to the surface anyway. So I shut valve again and start again. If paint gets too transparent I know I have to settle for more pressure. So I then add a drop of paint again.

    So I basically adjust the paint to match the low pressure and only when I've "broken" the paint will I up the pressure.

    Back and forth like this and I get it in about 30 seconds of trying.
    Last edited: Oct 4, 2016
  2. markjthomson

    markjthomson Very happy! Staff Member Mod

    Joined:
    Jul 16, 2014
    Messages:
    4,991
    Likes Received:
    3,993
    Trophy Points:
    126
    Location:
    Auckland New Zealand
    Good quick summary, thanks Andre. Is that with any particular paint or all the ones you use?
  3. AndreZA

    AndreZA Elite Member! Elite Member! Artist of the Month!

    Joined:
    Feb 28, 2012
    Messages:
    4,897
    Likes Received:
    4,606
    Trophy Points:
    126
    Location:
    Johannesburg, South Africa
    It's with all the paints I use. I use E'tac, Com-art and Schmincke Aero Colour. I will see if Illustration works the same when I get some next week.
    Last edited: Oct 4, 2016
    Splat and markjthomson like this.
  4. Splat

    Splat Gravity Guru

    Joined:
    Sep 27, 2016
    Messages:
    127
    Likes Received:
    138
    Trophy Points:
    41
    Location:
    Minneapolis, Minnesota, USA
    Thank you Andre. Thats much needed information here.
  5. AndreZA

    AndreZA Elite Member! Elite Member! Artist of the Month!

    Joined:
    Feb 28, 2012
    Messages:
    4,897
    Likes Received:
    4,606
    Trophy Points:
    126
    Location:
    Johannesburg, South Africa
    Geez, I should not type on the phone late at night. I just made some changes but concept stays the same.
  6. musicmacd

    musicmacd Air-Valve Autobot! Very Likeable!

    Joined:
    May 29, 2015
    Messages:
    4,023
    Likes Received:
    5,831
    Trophy Points:
    126
    Location:
    Brisbane
    Thanks for the info Andre

    Im not sure where I read about it, but i remember someone saying water should not be used with CI i understand it is waterbased paint! Interested to see what you think, its so much more thicker than all the paints listed.
    AndreZA likes this.
  7. Ronald art

    Ronald art Detail Decepticon! Very Likeable!

    Joined:
    Nov 13, 2014
    Messages:
    1,302
    Likes Received:
    1,675
    Trophy Points:
    111
    If I remember it right it was due to the fact that CI does contain solvents even if it is very little and the solvents react to water
    jord001 likes this.
  8. AndreZA

    AndreZA Elite Member! Elite Member! Artist of the Month!

    Joined:
    Feb 28, 2012
    Messages:
    4,897
    Likes Received:
    4,606
    Trophy Points:
    126
    Location:
    Johannesburg, South Africa
    I will not use water with it but the correct reducer.
    jord001 likes this.
  9. Ronald art

    Ronald art Detail Decepticon! Very Likeable!

    Joined:
    Nov 13, 2014
    Messages:
    1,302
    Likes Received:
    1,675
    Trophy Points:
    111
    since I lost part of my sight I stopped using water in my paints ( only Etac EFX for me ) but only the trans. base if I want the paint more transparent or nothing at all if I want opaque paints my compressor is set to the pressure my revolution airbrush needs so about 2.5 bar but other than that I work the same as Andre does . all my brushes have a mac valve except for the revolution I use a second hose with a inline mac valve for that brush
  10. jord001

    jord001 Air-Valve Autobot!

    Joined:
    Aug 23, 2012
    Messages:
    3,034
    Likes Received:
    1,701
    Trophy Points:
    126
    Location:
    Birmingham UK
    Good info, i will try to use the technique myself. Been trying CI over the last week or 2 and only used the reducer that came with it. Still need to fully figure the mixture out but got it good enough to paint my PP.

    Lee

Share This Page