I had considerable trouble making really good miter joints. Then I came up with the CORRECT setting. I took a piece of stock, 2"x1/4"x20" and set my crosscut miter for 45 degrees. I marked one side of the stock with a child's red crayon and the other side with a green crayon. Then I cut the stock about in half lengthwise. By turning one of the resulting pieces over, (align the red stripe with the green stripe), the result should be a perfect ninety degree angle. After a few tries I finally succeeded and slid the fence up the table and used a metal scribe to score the table permenently. Now I simply move the fence to the scribed mark on the table and lock it. The result is great. This I have done for both a left miter and a right miter.