4. Place the return's miter against the miter on the molding. If it doesn't fit perfectly, don't try to trim it down with the saw—your fingers would be too close to the blade. Instead, sand it down with a block and coarse sandpaper or go back to Steps 2 and 3 and cut another return off the end of the scrap stock. When the fit is perfect, glue the return to the molding and use painter's tape to hold it there while the glue dries.
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