Sorry it took so long, it was buried in the corner. I apply 2 coats of this, letting each coat dry about 15 minutes. Then I trim the parts that need paint with an X-Acto knife. It's similar to rubber cement. After you trim off the excess, it lifts off easily. Then I paint everything in the area. After it dries, peel of the mask with the paint on it. It easily lifts off. RC modelers have been using this stuff for years. Give you a sharp, crisp line every time.View attachment 1715866253