@stevendq Tks much, Steven. I have toyed with the idea from time to time, but do not have the equipment to do a good job of it. In the case of these “vortex” or “dizzy” bowls, there are very good videos on Youtube showing the entire process. If you are interested, the best ones are by Tom Lohman. He is a master of all things segmented.
Here is a link to his vortex bowl
As you can see, his are much more detailed and complicated than mine.