I have used them a few times. I got them at Home Depot for about 5 bucks each as I recall. I did'nt use them on a model however. I used them to spray a paint called Duracoat. I used it on 2 of my firearms. They worked really well in my opinion. The spray pattern was pretty good and the popellant lasted quite awile. AS long as your mixture is right it will spray well. I think they could work well for doing a large piece like a body. I have a couple of these things in my garage. I may have to give them a try,