I am having some trouble painting with tamiya white acrylic. I use a Paasche H single action airbrush and when ever I try to spray the paint it always seems to come out in flakes. I have tried different air pressures and thinning the paint; but whenever I get to a point that the paint flows neatly through the airbrush it is basically just thinner. I only seem to get this problem using Tamiya white. All others work fine.
I use spray bombs (GASP!) and find most all model specific yellows are worthless.
Switched to Krylon ‘Plastic specific’ yellows with excellent results. Tinted Krylon ‘Buttercream’ after a set coat of Future with thinned Raw Sienna oil paint to get a good German dark yellow.
Basically don’t beat yourself up over a product that may be of poor quality or a bad batch.
*Was born in Calgary & grew up North West of there in Sundre. Small world eh?
I like big white things (planes!) & regularly use XF-2 & plenty of it & can’t say that I have had any issue - even through a fine 0.15mm needle / nozzle set, but I always use Tamiya X-20A thinner.
It is possible that you have an iffy bottle of paint, but I don’t think duff Tamiya acrylic is that common to be honest. Is it possible that it’s contaminated?
Somewhere between 2:1 (paint:thinner) is a fair starting point, but more thinner can be added without giving any noticeable coverage issues, 5:3 works well for me even with a fine needle. Some Liquitex flow-aid or a similar product may help if you continue to have issues.
With Tamiya XF-2 I can use even the Tan Nozzle on my AZTEK. With X-2 (Gloss), I have to crank up my pressure, use my White Nozzle (high flow .50mm) get closer to my subject and slow down with the strokes. I use X-20 Thinner or off the shelf 70% alcohol.
Have had excellent luck / results spraying Testor’s Flat White OoC (Out of Can)
Cochrane eh?
Back when I toiled ‘in the patch’ worked at all the plants in your area one time or another, Wildcat hills, Jumping Pound & the Natural gas one north of town.
Can’t do much about the atmosphere for you, but could could do something about a capable brush though![:P]
But seriously - I regularly mix at 5:3 without a problem, going to 4:3 at the very most for colors with problematic pigments & rarely use additives. Have you considered swapping two gallons of thinner for one gallon of thinner, a teaspoon of Flow Air & another half teaspoon of Slow-Dri? Liquitex are from your side of the pond & make some pretty good stuff!
Another thing, you seriously don’t want our atmosphere - it’s very like the rain forests, only it rains considerably more, it colder, the trees are shorter & there isn’t much exotic wildlife (the animal sort) kicking about…