Here's how to dress up a fence post with a beveled cap. It's easy to do with a radial arm saw. Set the blade at a 45 degree angle. Before cutting, always protect your eyes with safety glasses. Then make one cut, pulling the saw firmly toward you. Rotate the post and make another cut, and proceeed the same way with the remaining sides. When you're finished, you'll have a perfect 45 degree beveled fence post cap.