Long and lean, the Large Platter Rib is designed to give good compression when you are making plates and platters enabling you to properly compress the clay and avoid those cracks that sometimes develop. They are made with a stiff polymer, but still offer some flexibility.
All of our polymer ribs are made of a unique material, which is resistant to cracking and the formation of burrs. We've found that with general use this rib material becomes burnished over time. Each polymer rib shape is available in a variety of hardnesses.