3. Turn the blade to 0 degrees. To prevent the return from being thrown back under the saw, place a 1× vertically on the saw table and clamp it to both fences. There's no need to measure for the next cut; just position the mitered end of the scrap piece under the blade at the point where the miter meets the back side of the molding. Take care not to cut into the miter's face. Now cut both the molding and the 1×. The return will stay put.