Dr. Strangelove Or how I learned to stop worrying and love Vallejo paint
I finally got it and after many months of experimentng with model color and model air. I have gotten lots of advise, and dozens of videos I think I have cracked the code for spraying with these paints give these tips a try and see if they work for you.
GOOD P.S.I Is a must 20 to 30 (I use 25)
Dont Thin with thinner! I know it sounds strange but if you want to spray model color ( the white capped ones) you need to thin it with flow improver and only that, Model air sprays righth out of the bottle I never have had to thin them , just add a couple of drops of flow improver to prevent tip drying.
The ratio , well I put my flow improver in first filling it to the tip right before your paint cup starts to get larger on the bottom or fill to the tip of the cup if that helps, Then I add about a dozen drops of Model color then stir and Im ready to paint so I would say I have about a 50/50 ratio maybe slightly less
DO NOT USE OTHER PRODUCTS TO THIN as stated above using only flow improver is the key to getting a good airbrushable paint.
Primer, We all have our favorites I use stynelrez it works wonderfully and Its easy for me to get since my hobby store keeps it in good supply I have sprayed a few spoons without primer and it comes out just fine But these paints scratch very easy without primer.
finally you must ably a clear coat after you paint otherwise your paintjob will scratch everytime you handle your model
I hope these tips will help get you going with Vellejo Paints I have learned to love them after ALOT of practice.