If you have a spray gun and want to spray Rust-O-Leum all you have to do is thin it 33% or 1 part mineral spirits to 3 parts paint. I usually save metal cans from soup ect.. and use a wooden stick marked at 1" for paint mark and 5/16" mark above it for thinner. I usually mix it then allow to stand 10 minutes or so and mix again, then pour it through a paint filter.
