These Bowls are made with RingMaster and ShopSmith. The effect can be very impressive. Requires some practice and a lot of sanding. Finishing with paste wax is best altho the grain is much better with the tung oil finish. They are not without some suprises especially when you encounter a bad glue joint and the bowl flies into pieces scattered all over the workshop area. The one with the hole I glued back together after picking up pieces for about a week.