3/4" x 5" in diameter, A Round Rib for Throwing Perfect Bowls Re-design by Hsin-Chuen Lin.
are and maintenance:
They should not be left in the water or slurry bucket for a long time. After finishing, use a sponge to clean the surface, and set out to dry. In a couple weeks, apply mineral oil on the surface and you can continue to enjoy their beauty and function!