is shown having 272 dimples n d 272 equation 1 can be solved for the number of allowable elements n e to be patterned within each dimple allowing for rounding n e lt 15 so the 5 rotational elements shown in fig2 are well within range of allowable rotational elements the dimple design begins by defining an encompassing cross sectional shape in which the rotational elements are defined for this example each spherical dimple has an edge angle of 18 u00b0 and a diameter of 0 165 inches as the defining dimple profile as shown in fig3 assuming a ball diameter d b of 1 68 inches the phantom chord volume v o like that mentioned in equation 2 of the spherical base shape is 9 59 u00d7 10 in 3 the dimple pattern used for this evaluation is shown in fig4 6 with fig5 and 6 being two cross sections of the dimple these show that the dimple has differing cross sections at a minimum of two points and that the rotational elements in the dimple do not exceed past the chord plane of the base dimple shape using cad software the dimple x as shown in fig7 is reduced to a single element x that is identical to the four other elements necessary to make the dimple with the elemental volume v e determined to be 1 13 u00d7 10 in 3 equation 2 can then be used to solve for the.