A cutting tool comprising: a tool body comprising: an insert pocket having a base surface and a sidewall; a sidewall aperture located in the sidewall; an abutment member bore opening out to the sidewall at the sidewall aperture, the abutment member bore having an abutment member axis defining an upward to downward direction; and an adjustment bore intersecting the abutment member bore, the adjustment bore having an adjustment bore axis defining an inner to outer direction and an adjustment bore diameter D AB; an abutment member comprising: an abutment member peripheral surface extending between an abutment member upper surface and an abutment member lower surface; an abutment surface; and a worm screw bore formed in the abutment member peripheral surface, the worm screw bore having a worm screw bore axis; and a worm screw having a worm screw thread and a worm screw diameter D WS, with D AB > D WS; wherein: the abutment member occupies the abutment member bore; the worm screw occupies the adjustment bore with the worm screw thread engaging the worm screw bore formed in the abutment member; and the worm screw is rotatable between: a first screw rotated position in which the abutment member is located in a first position along the abutment member bore axis; and a second screw rotated position in which the abutment member is located in a second position along the abutment member bore axis. a tool body comprising: an insert pocket having a base surface and a sidewall; a sidewall aperture located in the sidewall; an abutment member bore opening out to the sidewall at the sidewall aperture, the abutment member bore having an abutment member axis defining an upward to downward direction; and an adjustment bore intersecting the abutment member bore, the adjustment bore having an adjustment bore axis defining an inner to outer direction and an adjustment bore diameter D AB; an insert pocket having a base surface and a sidewall; a sidewall aperture located in the sidewall; an abutment member bore opening out to the sidewall at the sidewall aperture, the abutment member bore having an abutment member axis defining an upward to downward direction; and an adjustment bore intersecting the abutment member bore, the adjustment bore having an adjustment bore axis defining an inner to outer direction and an adjustment bore diameter D AB; an abutment member comprising: an abutment member peripheral surface extending between an abutment member upper surface and an abutment member lower surface; an abutment surface; and a worm screw bore formed in the abutment member peripheral surface, the worm screw bore having a worm screw bore axis; and an abutment member peripheral surface extending between an abutment member upper surface and an abutment member lower surface; an abutment surface; and a worm screw bore formed in the abutment member peripheral surface, the worm screw bore having a worm screw bore axis; and a worm screw having a worm screw thread and a worm screw diameter D WS, with D AB > D WS; wherein: the abutment member occupies the abutment member bore; the worm screw occupies the adjustment bore with the worm screw thread engaging the worm screw bore formed in the abutment member; and the worm screw is rotatable between: a first screw rotated position in which the abutment member is located in a first position along the abutment member bore axis; and a second screw rotated position in which the abutment member is located in a second position along the abutment member bore axis. the abutment member occupies the abutment member bore; the worm screw occupies the adjustment bore with the worm screw thread engaging the worm screw bore formed in the abutment member; and the worm screw is rotatable between: a first screw rotated position in which the abutment member is located in a first position along the abutment member bore axis; and a second screw rotated position in which the abutment member is located in a second position along the abutment member bore axis. a first screw rotated position in which the abutment member is located in a first position along the abutment member bore axis; and a second screw rotated position in which the abutment member is located in a second position along the abutment member bore axis.