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Ratio of Tamiya paint to thinner

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  • Member since
    January, 2012
  • From: South West England
Ratio of Tamiya paint to thinner
Posted by senna 87 on Friday, January 20, 2012 8:00 AM

Hello.

I'm looking into airbrushing and purchasing a kit soon.

I need to know what the ratio of paint to thinner is when airbrushing as I have asked many different companies, shops etc and they all say different ratios and percentages.

I'm going to be using Tamiya paint and thinner.

Please help me!

 

Guy.

senna 87Smile

  • Member since
    June, 2010
  • From: Austin, TX
Posted by DoogsATX on Friday, January 20, 2012 8:26 AM

With their lacquer thinner, I start at 1.5:1 thinner to paint and thin to taste. I've kind of developed an eye based on the consistency of the paint on my stirring paddle. But usually 1.5 or 2:1 for standard coverage. At 9:1 you can start doing filters, fading and shading. 

Not sure about X20A, but I assume it's probably similar. 

On the Bench: 1/32 Trumpeter P-47 | 1/32 Hasegawa Bf 109G | 1/144 Eduard MiG-21MF x2

On Deck:  1/350 HMS Dreadnought

Blog/Completed Builds: doogsmodels.com

 

  • Member since
    May, 2011
  • From: Bedford, Indiana
Posted by AceHawkDriver on Friday, January 20, 2012 8:29 AM

First off Welcome Sign to the forum!  It will really depend on what you're trying to accomplish.  For instance, for a general basecoat I thin Tamiya paints (with laquer thinner) at about 30% thinner and 70% paint ratio typically shot through the airbrush at around 20psi.  For different effects, i.e. a basecoat of paint after preshading panel lines, I will thin 50:50 in order to give the paint a more translucent effect allowing me to build the layers of paint up a little at a time (shot at around 15-18psi).  Tamiya paints are excellent when it comes to high thinner:paint ratios and being able to spray at a low psi.

Temperature and humidity will play a role in things.  I would definitely recommend having a spare model for "target practice" and try different ratios of paint and thinner shooting them at different psi. 

Peace through superior firepower.

Brian

        

  • Member since
    October, 2007
  • From: Scotland
Posted by Milairjunkie on Friday, January 20, 2012 8:34 AM

The reason there is differing opinion is because there are a few factors that need to be considered when thinning - different airbrushes with different needle/nozzle combinations, environmental factors (heat, humidity) & user "style" all have an effect on what the best thinning ratio for each airbrusher is.

Your best bet would be to start at 50/50 & see how you get on;

Paint too dry or trouble getting good atomization - increase the % of thinners,

Finish too wet or thin - decrease the % of thinners.

 

This is from Tamiya's website, but can be taken with a pinch of salt as most people will use more thinners;

Proper ratio for paint thickness differs according to
weather conditions. Rough guidelines of thinning ratio is
2:1-3:1 ( Tamiya Acrylic paint : thinner).

  • Member since
    November, 2008
  • From: Jefferson City, MO
Posted by iraqiwildman on Friday, January 20, 2012 10:18 AM

I use a Badger 150 bottom feed airbrush. I have found that a 2 parts Tamiya paint to 1 part Tamiya X20A Thinner worked best at about 16-20 psi.

If I am doing detail work, I go with a 1 to 1 ratio and about 12 psi.

Tim Wilding

 ]

  • Member since
    January, 2012
  • From: South West England
Posted by senna 87 on Friday, January 20, 2012 10:18 AM

senna 87Smile

  • Member since
    June, 2010
  • From: Austin, TX
Posted by DoogsATX on Friday, January 20, 2012 10:32 AM

The H&S Evolution is a brilliant airbrush. You'll love it.

On the Bench: 1/32 Trumpeter P-47 | 1/32 Hasegawa Bf 109G | 1/144 Eduard MiG-21MF x2

On Deck:  1/350 HMS Dreadnought

Blog/Completed Builds: doogsmodels.com

 

  • Member since
    March, 2003
  • From: Fort Worth, TX
Posted by RESlusher on Friday, January 20, 2012 10:39 AM

I'm using the Paasche H, single action rig that my wife bought me for Christmas a couple years ago.

I'm probably not thinning my paint nearly enough.  Here's how I do it.  I fill the paint cup about 2/3 of the way up.  I then use an eye dropper to put in enough rubbing alcohol (when I use Tamiya acrylics) to put a layer over the top of the paint.  I then stir it with a toothpick to blend it all together.  I use about 20 PSI and it comes out just fine. 

 

Richard S.

 

  • Member since
    December, 2004
  • From: Houston, Texas
Posted by panzerpilot on Friday, January 20, 2012 11:34 AM

Here's what works for me:

For acrylics, I have a little 1oz bottle, with an eye dropper top. I put regular rubbing alcohol in it (70% isoprophyl). It's far cheaper than brand name acrylic thinners. I put about 3-4 drops of liquitex "flow-aid" in it, which you can get at Michael's or an art supply store. For tamiya acrylics, I put the paint in the airbrush paint cup and then simply eyeball how much thinner I need (usually around 30%). It should look about the consistency of milk. I stir it up with a toothpick and then paint at around 18psi.

-Tom

  • Member since
    January, 2011
Posted by stymye on Friday, January 20, 2012 4:41 PM

airbrushing and thinning is a personel thing ,,, how far from the model are you spraying ,,, what color ,, how thin ,, what pressure ,,what needle,, how far back are you pulling the trigger ..there are so many variables

 you can use the guidelines but in the end you will have to learn what works,,, it's been said a million times but practice,,, will reveal the best answer

 

 also when starting out ,,, using the manufactures thinner is a big help...trying out alternate methods and products in the midst of learning to airbrush is  not the best advice.you will find what works best for you as you progress.

  • Member since
    January, 2012
  • From: South West England
Posted by senna 87 on Friday, January 20, 2012 5:42 PM

Thank you for everyones advice I'm going to buy a little Tamiya Morris Mini 1/24 scale as a practice dummy. 

I'm also buying some books which are affiliated with this site on www.amazon.co.uk to try and guide me on my way.

I will obviously have to practice and see what works best for me. My main targets are to airbrush my 2 new F1 cars both 1/12 scale and Tamiya:

McLaren Honda MP4/6

and

Williams Renault FW14B.

 

Guy.

senna 87Smile

  • Member since
    February, 2011
  • From: Monterey Bay,CA-Fort Bragg, NC
Posted by randypandy831 on Friday, January 20, 2012 10:17 PM

some will require more thinning then others because the consistency from bottle to bottle won't always be the same. you want to thin to the consistency of milk.  

tamiya 1/48 P-47D $25 + shipping

tamiya 1/48 mosquito $20+ shipping

hobby boss 1/48 F-105G. wings and fuselage cut from sprue. $40+ shipping. 

  • Member since
    January, 2012
  • From: South West England
Posted by senna 87 on Friday, January 20, 2012 11:26 PM

Do you mean by milk that it is slightly thicker than water and if tilted will loosely stick to its container?

Guy.

senna 87Smile

  • Member since
    February, 2011
  • From: Monterey Bay,CA-Fort Bragg, NC
Posted by randypandy831 on Thursday, January 26, 2012 8:58 PM

just tap the stirring stick inside the cup. watch it drip along the side. if it flows very slow then it's still to thick. you want it thin but not waster thin. most will use water thin for detailed work. 

tamiya 1/48 P-47D $25 + shipping

tamiya 1/48 mosquito $20+ shipping

hobby boss 1/48 F-105G. wings and fuselage cut from sprue. $40+ shipping. 

  • Member since
    April, 2009
  • From: Lowell City, Mars
Posted by Cadet Chuck on Thursday, January 26, 2012 9:38 PM

Some things cannot be known- this is one of those.

Computer, did we bring batteries?.....Computer?

  • Member since
    January, 2012
  • From: South West England
Posted by senna 87 on Friday, January 27, 2012 12:54 PM

Just to let you know I'm getting the Harder and Sttenbeck Evolution Silverline 2 in 1 airbrush instead of just the Evolution 2 in 1. 

 

Guy.

senna 87Smile

  • Member since
    March, 2003
  • From: Illinois
Posted by wjbwjb29 on Sunday, January 29, 2012 11:12 AM

Hello;

Do you add the flow aid straight from the bottle? The Liqitex flow aid I have says on the bottle to cut it 20-1 with water.

 

Bill

On the Bench:   Trumperter Tsesarevich on deck Glencoe USS Oregon

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