Paint vs Thinner Ratios.....

Discussion in 'Painting Questions, Tutorials and Guidebooks' started by lesofprimus, Feb 11, 2010.

  1. lesofprimus

    lesofprimus Active Member

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    OK fellas, there seems to be several different opinions around the world concerning mixture ratios for airbrushing...

    I think the details are where things get convoluted....

    Im unsure as to what Ive been doing of recent, and need to get this down in a thread....

    My details are as follows:
    Badger Renegade Velocity gravity fed
    .21mm very fine tip
    air pressure @ 10-12 psi
    Model Master Enamel Paints
    Cheapo Charlie Thinner (Mineral Spirits)
    ratio of 1:3 paint to thinner

    Ive been told I am thinning way too much, and the last spraying I did was 1:2, but that was small bits and not a real basis for comparison....

    What are ur specific thoughts on this and my details???
     
  2. 109ROAMING

    109ROAMING Active Member

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    'The devil is in the detail'

    Good thread Dan , You seem fine but I'm far less experience than you

    My details are ,

    Aztek A470
    Air pressure 40-50 psi
    Multiple size tips
    Humbrol Enamels , with
    Cheap turps thinners

    I do about a 50/50 mix , seems to work fine ( after much experimenting and F ups)
     
  3. B-17engineer

    B-17engineer Active Member

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    I generally use 1 to 1 ratio as Wojtek has told me...but, I think I will start using 2 to 1


    Badger 200
    Model Master Enamels or Polly Scale Acrylics
    Model Master thinner for enamel, water or windex for Acrylic
    Psi@ 20-25
    .21mm fine tip

    Seems to work OK as of later.
     
  4. javlin

    javlin Well-Known Member

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    #4 javlin, Feb 11, 2010
    Last edited: Feb 11, 2010
    Badger 150 D/A
    fine tip @ 10-15 psi
    60%-70% paint/ rest thinner
    enamels MMaster

    found it very easy to control a steady slow flow(no splatter).
     
  5. Crimea_River

    Crimea_River Well-Known Member

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    MM Enamels or Pollyscale acrylics at the moment
    10 - 15psi
    Ratios are visual - til I get milk consistency but ranges from 30-60% thinner
    Thinner is Lacquer Thinner
     
  6. Airframes

    Airframes Benevolens Magister

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    AB double-action gravity fed
    .35 fine tip
    Humbrol enamel
    Cheapo white spirit thinner (turps substitute - what enamel thinners is anyway!!)
    Ratio, by eye, as for milk, normally 50/50 (or 60 thinner, 40 paint, in rare cases.)
    PSI - haven't a $%^%£$ clue !
     
  7. B-17engineer

    B-17engineer Active Member

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    With ya on that T....don't have a clue on psi :lol:
     
  8. javlin

    javlin Well-Known Member

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    Snowday my boy is marginally hoping for tomorrow knowing how people around here do not know how to drive on ice.
     
  9. B-17engineer

    B-17engineer Active Member

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  10. kgambit

    kgambit Active Member

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    #10 kgambit, Feb 11, 2010
    Last edited: Feb 11, 2010
    Iwata HP-BCS Double action bottom siphon feed (x2)
    Nozzle: 0.50 and 0.35 mm
    Paints (Acrylic)/Thinners:
    - PollyScale / Windex or Model Master Acrylic Thinner
    - Model Master Acryl / 91% Isopropyl alcohol or Model Master Acrylic Thinner
    - Gunze Sangyo / 91% Isopropyl alcohol
    - Lifecolor / distilled water (!)
    - Tamiya / Tamiya X20A thinner or 91% Isopropyl alcohol
    (Note: If you are using Iso as a thinner, you should use the higher end stuff. The lower percentage iso's have additives that can cause problems with your airbrush.)
    Pressure: 15 - 20 psi (normal) - occasionaly will run as high as 40 psi
    Paint/Thinner ratio: ~70/30 (normal) (will run up to 50/50 on occassion but at a different pressure)
     
  11. lesofprimus

    lesofprimus Active Member

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    Interesting stuff.... Most of u guys mix 1:1...
     
  12. Crimea_River

    Crimea_River Well-Known Member

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    Read or saw somewhere that a Luftwaffe a/c specialist goes like 70% thinner and very low pressures 5 to 10 psi.
     
  13. lesofprimus

    lesofprimus Active Member

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    Thats about what Ive been doin.... All my models so far have been sprayed 1:3 paint to thinner with 18 psi or so, and Ive never had a problem with anything other than water spitting out....

    I will try the mixes u guys use and see if theres a difference to my paint... Wonder about Wayne and Wojteks mixture....
     
  14. B-17engineer

    B-17engineer Active Member

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    Wojtek always say 1:1. Curious about Wayne though too...
     
  15. dirkpitt289

    dirkpitt289 Active Member

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    Badger 175 Duel action, bottom feed
    Model Master/ Polly scale paints
    10 to 20 PSI range
    1:3 paint to thinners
     
  16. lesofprimus

    lesofprimus Active Member

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    See Dirk, u use the same ratio I do...
     
  17. 109ROAMING

    109ROAMING Active Member

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    I occasionally get that too , bloody annoyinng and never know why it happens, or more importantly how to stop it happening
     
  18. parsifal

    parsifal Well-Known Member

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    I'm still finding my sea legs on this. I use water based paints, but generally dont exceed 1:1 on the acrylic thinner. Once I even didnt put any thinner into the mix. I have never really had a complete stuff up due to paint thickness, but the thickness of the paint obviously varies. I wont use Humbrol water based paints. I tend to stick to the tamiya range
     
  19. brandle

    brandle Member

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    Iwata Revolution TR0
    Iwata Power Jet Pro compressor
    Humbrol
    Tamiya (no experience yet)
    10-15 psi
    1:3 paint to decorators turpentine thinner
     
  20. dirkpitt289

    dirkpitt289 Active Member

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    The water is usually from condensation building up inside your compressor. Not that I follow this but the "RULE" is that you should have a water separator attached. I know I need one and so far it hasn't come back to bite me but I tell you what. The day it happens to me I'll be pissed beyond pissed.
     
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