Crown moulding is a beautiful addition to a window cornice; it gives the cornice a more formal look than simply covering it with fabric. With the appropriate tools and the proper settings, adding crown moulding to a window cornice is an easy task. The rising prices of lumber and the rising rates of trim carpenters make home improvements a costly investment, but you don't have to be a professional to install beautiful moulding in your home.
Measure the front and sides of the base cornice to determine the required length of the crown moulding.
Adjust the blade and the tilt on your compound mitre saw for a 90-degree cut. For a 52-degree angle crown moulding, the mitre angle is 31.6 degrees and the blade tilt is 33.9 degrees.
For a left-hand, outside cut, place the moulding face up on the saw table and extended to the right of the saw blade with the bottom of the moulding against the mitre saw fence. Make the cuts on the front and sides of the crown moulding.
For a right-hand, outside cut, place the moulding face up on the saw table and extended to the right of the saw blade with the top of the crown moulding against the mitre saw fence. Make the cuts on the front and sides of the moulding.
Always ensure the saw blade is square with the mitre fence before cutting. Make a test cut 2.5 cm (1 inch) beyond the cutting mark and test the fit of the moulding before committing to the actual cut.
Always wear safety goggles when operating a mitre saw. Never place your fingers near the blade until it has come to a complete stop.