Following some of the good advice I was given on my last bowl, I did this one. Took Vaughn's suggestion about making the sides slant more, and Ted and Ryan and Vaughn's about the size of the tenon. I'm happy with this one. It has the thinnest walls of any of my bowls so far. I would like to know where the black marks on the bowl come from. They are in an area of heavy rings, so I am wondering it the pine is leaking a little pitch. After all my tools are perfectly clean!