3-Cornered Bowl - How do you do that?

At the Chicago Woodturners' symposium last summer, "Turn-On! Chicago 2008," I had the opportunity to see demonstrations by a number of very talented turners. One of them was Barbara Crockett, of Columbus, Ohio, who showed us her technique for turning a 3-cornered bowl out of a cubic block of wood. I decided to give it a try (from a piece of 8" x 8" cedar post), and here is my result. The bowl is about 7 1/2" across and 5" high to the points. It is painted similarly to the bowl in my 02/29/08 post, except here I came over the top with the black after I'd done the red on the inside.