Thanks Bud,
Guy,
You may need to change the Teflon seals.
Which airbrush do you use?
vB 
Hi Bob, I've got an Iwata Custom Micro B. But I think I've finally found the problem, I went over it with a fine tooth comb and found that the blades of the tip were slightly bent (must have dropped it). If I use it without the tip it sprays fine! Phew. I'll probably need to get a new tip I reckon though
I've just had an experimental paint session in an effort to recreate an uneven, dappled finish. I decided to go with the salt technique which I haven't tried before. This required a leap of faith to try it out with my lovely shiny, smooth yellow wing!
I'm sure it's old hat for everyone here, but here's what I tried:
1. Moisten the surface with warm water (the airbrush seemed to work ok with this).
2. Sprinkle on the salt - I used a standard salt grinder with coarse salt, then a final sprinkle with fine.
3. Mist on some more water.
4. Dry gently with a hairdryer.
5. Lightly spray a well thinned coat of a subtly different shade to the base.
6. Dry again with the hairdryer.
7. The salt then just brushes off and finish with a wipe down.
Quite pleased with the initial results, but bear in mind there are more processes to come and the overcoat is a Matt finish so looks slightly odd at the moment!
Guy
