GR Pottery Forms - OG Starter Set (6 Piece)The OG Starter set consists of 6 different shapes and sizes of OG Forms, and is a perfect choice for beginner and seasoned potters alike! The OG Starter Set includes: (1) 8" OG Spherical Square (1) 8" OG Round (1) 8x3. 5" OG Rectangle (1) 4x8" OG Spherical Rectangle (1) 5x7" OG Oval (1) 5x4" OG Rectangle Clay should be left on the OG Forms until stiff, leather hard. Each OG Form has a 45 degree angle edge, and 3 4" depth. All Forms are measured in