Each piece of wood ” talks ” to Ron to tell him the size and shape of the bowl. Ron tries to choose a design that shows off the unique grain and special features . He particularly enjoys working with unusual wood and burls. Burls are the growths on a tree. They often contain spalted wood, markings of insects and holes and therefore are somewhat unstable. Pieces are finished by sanding with increasingly fine sandpaper up to 2000 , oiled and then polished using the “Beal Buffing system ” . This system applies and polishes with three different types of wax. All bowls are food safe. To clean , they should be wiped off with a damp cloth not immersed in water.