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Originally Posted by StephenDeli
Martbee, what psi do you spray your tamiya acrylics with. Becuase im at about 7-13 and I get this VERY FINE orange peel. I thin at about 2:1.
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Most of the time between 20 to 25... sometimes I go up to 30... always depending on the way you've thinned your mixture. If I were shooting a mixture of Tamiya 2:1, I'd be around 15psi but that a rule of thumbs... I never go really with the number when it comes to Airbrushing. I like to go with the feeling more than the numbers.
As exemple... I don't even know at what dose I thin... I go with the look of it, if it's milk like, then it Ok for most acrylics (I like my tamiya to be a little (but very little) more thick than that... that's why the higher psi), if I shoot lacquer, I like it to be a little more dillued... especialy the first 2 or 3 first mist coats... just to see if there's a "nude spot" on my model. If there is, the little lacquer won't eat all the plastic but will dig a little hole in it but can easely be repaired then reprimed.
As for another exemple, I don't really write down at what psi with what paint. When the paint have a decend look in the jar, it's time for an "Airborne Shooting"... just shooting away from any surface in the air to see how the paint mist and blend in the air... to ajust the spitting (not enough psi) or too much mist (too much psi). Then the "Object trial"... this is where I shoot on a piece of old canvas to find the right "sweet spot" where the paint will cover at a perfect distance, at the right psi with the prepare dillued (or not) paint. Let the brain control and learn that... observe, pay attention at the weigh you're putting on that trigger, at what distance and everything. Then the final step, move the body of your model, the bike helmet, the real car or everything you have to shoot and go on... don't loose faith in you and never turn back unless if it's to change paint color or add more in the cup (or jar).
Of course... if your shooting at 7-13 psi but never pull all the way back down on the trigger of a double action Airbrush... you're not shooting 13 psi... but you know that !!! So you don't know at what psi you're shooting right ?? Just like me !
As exemple... this babe never had a polish or a compound on it:
