Even better is the 3M PPS system which allows you to use disposable bladders in a gravity feed gun and paint in every direction! Look it up - its quite nice and clean up goes down to about 10 minutes with it. I have been using it on my past few projects and if you are going to do any painting for more than one vehicle it is well worth consideration. I'll never use anything else. Btw it wouldn't work on my chump HF HVLP gun, but I got a Debliss finish line III and my paint jobs have never looked better. Check out my next post.