4 1 2 x 1 4 x 5 8 11 July 8, 2019 16 32 64 128 4 1 2 x 1 4 x 5 8 11 grinding wheel 4 1 2 x .045 x 5 8 11 4 1/2 + 1 1/3 4 + 4 = 12
