How to Use a Coping Saw for Crown Molding
- 1). Measure the ceiling where your first piece of crown molding will be installed. Make a straight cut on each end with your miter saw so the molding will butt against the side walls. Install the molding.
- 2). Measure the ceiling where your next piece of molding will be installed. Cut a 45-degree miter with your saw in the end that will meet the first piece of molding. Make the cut so it angles into the corner. Make a straight cut on the opposite end.
- 3). Rub a pencil along the mitered edged as a guideline. Start cutting along the mitered edge, holding your coping saw at an angle toward the back of the molding. Follow the line, shaving off the back side of the molding where you made the miter cut. You will be leaving just a sliver of the molding face intact and the curve of the molding profile will be pronounced.
- 4). Place the coped molding on the ceiling, butting against the first piece you installed. The cut curve of the molding will fit snugly against the first piece in the corner. Make any adjustments by shaving a little more of the back side of the coped molding, using a rasp.
Source...