From the Complete Paint Guide:
<I usually like to use at least three seperate coats of clear-coat.
Each of these coats whould be applied exactly liek the color coat, in several thin layers. The sanding is where it differs, however. Instead of using sandpaper, invest in some 0000 grade steel wool (around $4.00 at a paint store, or walmart). This should be used very lightly after the first two clear coats, without any water... Make sure that you rinse the piece after every time that you sand it, and the let towel it completely dry.>
So I see to use it after each coat, but after how long of drying time? Thanks again-