Burying the flake can take as few as five or as many as 10 coats of clear. Santini recommends four to five coats maximum in one session and then waiting a few days for them to dry. If you add too many coats at one time, the bottom layers will dry slower than the top ones, causing cracking or bubbling. After the paint is totally dry, you can wet-sand it with 500-grit paper and add some more coats. Be careful not to break through to the flake when you are sanding or you will have to start again. If it feels and looks flat, it's good. This job took eight coats and two sandings to complete.