Shas'O Ora wrote:
Is there a minimum of pressure you need and a minimum thickness of the needle for the paints of GW?
Can you use the "Air" colors as they are or do you mix them and make them thinner?
When mixing, with what?
Somewhere I read that the GW-colors are quite thick and though have special requirements.
Planned to start yesterday but my equipment didn´t work.
Before buying new stuff I would like to hear advices from the experienced painters.
For pressure I usually do 15-25 psi (depends on consistency to find the right pressure). For needles, I find .2mm clogs a bit too easily, but .4mm is generally fine, even for long painting sessions. Of course when airbrushing metallic paints you want to lean a bit more on the bigger side as the metallic flecks are generally bigger than regular pigments. And as with any paint you generally want to dilute it down 1:1 paint:thinner works best. As others have suggested, use Vallejo thinner. Way cheaper than GWs but fully compatible with their paints.
For cleaning, get a proper cleaning pot if you don’t have one. After emptying the cup I usually spray some water through to get the worst out, then put a bit of Medea Airbrush Cleaner through to get rid of the rest, then rinse out with some water again before putting some more paint in. Only takes a minute to do and helps keep things flowing longer.
And after every session you want to strip down your airbrush and give it a good clean. No matter how good you are during a session, there will always be build up (but if you've been good at washing through it should mostly be very watery and easy to clean by flushing water through). As always though, be careful with the needle.