My airbrush is a Paasche model H http://www.misterart.com/store/view/004/group_id/1641/Paasche-Model-H-Hobby-Airbrush-Set.htm I have tried to spray mostly CSI vinyl and it just spiderwebs on me. I have also tried the Walmart apple brand craft paint (water based). I don't know what I am doing wrong with either paint. I would like to keep it water based because the heater is in the basement and the wife would kill me if I blew up the house. Can everyone list what types of paint they use and how they thin it down. I tried the apple brand because a guy that make custom muskie lures uses it. He has explained to me how he does it but I still can't get it to work. Maybe my gun is bad but it seems to be working fine. I know it's me. HELP!!! I just read the link that I posted and it said 20 - 45lbs air. The box it came in said 10 - 25lbs. I never went over 20lbs for fear of blowing it up.