I used an HVLP gun to spray a trailer I have with Rustoleum. I had a heck of a time to get it to level out. I thinned it with acetone per directions but was adding so much that I was afraid I'd be spraying a translucent mixture. Anyway, I double coated and laid it on thick. It didn't run but it gave a slightly orange peel effect, not a dry effect, but it just didn't level out well.
I question the use of acetone because it flashes so quickly. I needed more wet time. I'm unfamiliar to Rustoleum except for the rattle cans, and honestly, they have a finer, smoother mist of spray than I did. It was obviously something I was doing wrong. Big compressor so air wasn't the problem. Maybe my gun was tip was the wrong size. 1.7