cutter radial and cutter tangential directions pillar clamp 5 inserted into clamp pocket 7 forces pillar end surface 9 downward against pillar pocket bottom 10 which is generally planar in whole or in part though not necessarily planar and back against pillar pocket back wall 11 pillar clamp 5 may be affixed to body base 1 in various ways in this case shown pillar clamp 5 is affixed to body base with pillar clamp screw 12 other means than a threaded fastener may be used likewise pillar clamps 5 of different style and shape may be used with appropriate changes in the geometry of pillar clamp receiver 6 so long as the noted clamping forces are achieved body base 1 may have to the extent needed an insert clearance space 13 associated with each pillar pocket 4 when insert support pillar 3 is cylindrically shaped and thus in a cylindrically shaped pillar pocket 4 some means of supporting torsional loads about the axis of insert support pillar is required in the displayed embodiment shown in fig6 this is achieved through the choice of geometry associated with the interface between pillar clamp 5 and pillar clamp receiver 6 an insert support pillar 3 has at its pillar top 14 the appropriate geometry for either direct or indirect mounting of a cutting insert 15 fig7 a illustrates a direct.