Before revision: Typically, the wood slat is trimmed down to a sharp edge around the edges, and serrations along the length of the wooden slat may or may not be used, depending on the cultural traditions of the region in question.
After revision: Typically, the wood slat is trimmed down to a sharp edge and serrations along the length of the wooden slat may or may not be used, depending on the cultural traditions of the region in question.