The secret for a glove-tight fit for trim corners is a coped joint. With this technique you can even make complex crown moldings fit without leaving gaps. http://www.familyhandyman.com/carpentry/trim-carpentry/how-to-cope-joints/view-all
Square Half Wall (Flat) Paneled, 8" x 8ft. 8 ft tall, 7 5/8" square, 6 5/8" inside and with 1/2" thick sides. The paneled portion is 38" high, made to compliment our Elite Wall Paneled Wainscoting using the same trims and proportions. It is a classic look that can be easily adapted to suit your varying needs in paint grade MDF. Good inspiration for building your own from real wood.
Are Your Cleaning Products Really "Clean?" - Recipes to Help You Clean
The addition of crown molding to your home's interior is a tasteful way to add visual interest as well as value. See step-by-step instructions for installing crown molding from the experts at DIYNetwork.com.