I personally have not used the product but have seen it applied to a frame and trunk floor. If I remember correctly, they applied a metal conditioner before spraying. Originally one coat was going to be used, but as everyone knows, more is always better, so they waited for it to flash and put a second coat on. It looked good, filled well. I have not seen the finished product, yet, they have painted the frame a satin black and sprayed the trunk floor the color of the car and clearcoated it. Don't think you can go wrong, have used other Kirker products and if you follow the directions(especially on cleaning the paint gun) the jobs come out pretty good.