Hi guys, I just purchased a Harder and Steenbeck Infinity airbrush and it has a .15mm needle and nozzel set. Ive never used a set so fine and I'm having a lot of trouble with clogging. I was spraying Vallejo Air sand mixed with some retardant and the brush would completely clog. Can u guys give me some hints and tips on using such a fine needle? Thinning. Air pressure. It was pretty frustrating. Also, what kind paint/air mix works best with the thin lines you can get with the quick

Dave,what is your reduction ratio? and what air pressure are you spraying at?Jeff

Hi Jeff. I was spraying at about 20psi and was just putting in a drop of flow enhancer and two or three drops of water.

You are adding those amounts of flow enhancer and retarder to how much paint?Also,what are you using for retarder and flow enhancer.Jeff

I have had a similar problem with my Iwata. I find that I have to thin the paint a bit more than I usually do. If I don't, the finish is pebbly and the brush is constantly clogging. I would recomend mixing at a 3:7 water:paint ratio. If this does not work, increase the amount of water slightly. Keep doing this until you get a smooth flow. It may take a few more coats, but will look that much better. I have used MM enamels and Tamiya acryls. For flow retarder, I use a few drops of glass cleaner.