At my local Home Depot the only half round molding was plastic, but I found an even better option in the decorative molding department. Imagine a 1/2" half round on top of a 3/4" wide X 1/4" high flat piece, but it's cut from one piece of wood. Sold by the inch, I bought just a couple feet, which is plenty, and I use it with no covering, just the naked wood. Works wonderfully!