Measuring. Measuring again...was it 17 and a half, or 18? I had arrived at the foundry thinking cylinder but returned 4 hours and 3 arguments later to my studio with a trapezoidal shape in mind. Pictured here: Brad Conklin of Polich-Tallix (side note: Brad is a master wood sculptor and jack-of-zillion-trades, so I often seek his opinion & expertise). Alas, Peter Ross (also of PTX and possessing of a font of experience & practical know-how-it-all) officially won the unofficial "what base shape?" contest. Cylinder, schmilinder. Thanks Pete!