What PSI do you start with?

15-20 for normal, 3-10 for details

also it depends on your airbrush a little too... a siphon feed would have a little trouble (assuming you are using the bottle with the tube in it) down real low...

whereas a gravity feed would do it well...

here's a good article Music City put together on using pressure:

http://www.craigcentral.com/models/pressure.asp

Thanks for the reply guys. Tom, that link is iust what I needed.

Scott, that is an awesome little write-up!!! Great analogy. I'm gonna have to browse the rest of your site.

here's the other two articles he put together since yall liked the one I posted:

http://www.craigcentral.com/models/thinning.asp

http://www.craigcentral.com/models/ab.asp

He really did a great job on answering some basic questions... hope it helps!!!