I am airbrushing my Tamiya A-10A using MM Acryl Interior Green. I use an Iwata Eclipse HP-CS airbursh. I thinned the paint 2 parts paint to one MM Acryl airbrush thinner. The paint sprayed onto the model and it looked like it was dry as it hit the surface…it had a very sandy finish. I was pushing about 30 psi thru my compressor. Did I have too much air…or too much thinner…or both. What is the main cause of this? How can I save it?
I use that same paint quite a bit for cockpits, and I thin it 3:1 using 90% isopropyl alcohol. I spray pretty low volume at about 15 psi from 3"-4" away from the surface, but I use Badger airbrushes.
My guess (and it’s just a guess since I’m sure no expert) is that it was your pressure. Spraying at 30 psi you were probably a good distance from the surface of the model. Say a foot or so? That distance gives the paint more time to dry as it travels. That’s one reason I like to use lower pressure and get as close as I can. Acrylics dry sooooo fast to start out with I don’t want to give them any help!
As to saving things, if the paint has adhered pretty well just lightly steel wool it and shoot another coat on and it should look OK. If it hasn’t, either Windex or 409 will probably take it off pretty well.
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Ok. thanks. I’ll give that a try .
The problem is probably the paint starting to dry in the air before hitting the surface of the model. Really high pressure could do that as will holding the airbrush really far from the subject you are airbrushing. Try reducing either or both which will help or you can increase thinning the paint.