A cemented carbide corner radius end mill having a rotation axis defining forward and rearward directions (D F, D R), and comprising: front and rear ends (14, 16) and a peripheral surface extending therebetween; a cutting portion extending rearwardly from the front end; and a shank portion located rearward of the cutting portion; the cutting portion having a cutting portion diameter (D E) at the front end and an effective cutting length L E and comprising: integrally formed teeth extending from the front end to the peripheral surface; and a helical flute located between each pair of adjacent teeth and having a helix angle H fulfilling the condition: 25° ≤ H ≤ 60°; an index angle being subtended between each pair of adjacent teeth; each tooth comprising: a relief surface; a rake surface; a cutting edge formed at an intersection of the relief and rake surfaces (28, 30); and a corner comprising a circular arc profile defining a portion of a circle (I C) having a circle center point (C C), a circle radius (R C), axial and radial tangent lines (L A, L R), and a bisector line (L B); the relief surface comprising: an axial relief surface at the front end; a radial relief surface at the peripheral surface; and a corner relief surface connecting the axial and radial relief surfaces (28A, 28B); the rake surface comprising: a rake cutting sub-surface extending adjacent the cutting edge; a rake recessed sub-surface; and a rake ridge formed at an intersection of the rake cutting and rake recessed sub-surfaces (30A, 30B); characterised in that the cutting edge comprises: an axial sub-edge at the front end extending to the axial tangent line (L A); a corner sub-edge extending from the axial tangent line (L A) to the radial tangent line (L R); and a radial sub-edge extending rearward from the radial tangent line (L R); wherein between the rake ridge and the cutting edge: a radial cutting sub-surface width (W R) is measurable along the radial tangent line (L R); a bisector cutting sub-surface width (W B) is measurable along the bisector line (L B); and an axial cutting sub-surface width (W A) is measurable along the axial tangent line (L A); wherein the rake ridge of one or more of the teeth is continuously curved from the bisector line (L B) until at least an axial location rearward of the corner relief surface. front and rear ends (14, 16) and a peripheral surface extending therebetween; a cutting portion extending rearwardly from the front end; and a shank portion located rearward of the cutting portion; integrally formed teeth extending from the front end to the peripheral surface; and a helical flute located between each pair of adjacent teeth and having a helix angle H fulfilling the condition: 25° ≤ H ≤ 60°; a relief surface; a rake surface; a cutting edge formed at an intersection of the relief and rake surfaces (28, 30); and a corner comprising a circular arc profile defining a portion of a circle (I C) having a circle center point (C C), a circle radius (R C), axial and radial tangent lines (L A, L R), and a bisector line (L B); an axial relief surface at the front end; a radial relief surface at the peripheral surface; and a corner relief surface connecting the axial and radial relief surfaces (28A, 28B); a rake cutting sub-surface extending adjacent the cutting edge; a rake recessed sub-surface; and a rake ridge formed at an intersection of the rake cutting and rake recessed sub-surfaces (30A, 30B); characterised in that the cutting edge comprises: an axial sub-edge at the front end extending to the axial tangent line (L A); a corner sub-edge extending from the axial tangent line (L A) to the radial tangent line (L R); and a radial sub-edge extending rearward from the radial tangent line (L R); an axial sub-edge at the front end extending to the axial tangent line (L A); a corner sub-edge extending from the axial tangent line (L A) to the radial tangent line (L R); and a radial sub-edge extending rearward from the radial tangent line (L R); wherein between the rake ridge and the cutting edge: a radial cutting sub-surface width (W R) is measurable along the radial tangent line (L R); a bisector cutting sub-surface width (W B) is measurable along the bisector line (L B); and an axial cutting sub-surface width (W A) is measurable along the axial tangent line (L A); wherein the rake ridge of one or more of the teeth is continuously curved from the bisector line (L B) until at least an axial location rearward of the corner relief surface. a radial cutting sub-surface width (W R) is measurable along the radial tangent line (L R); a bisector cutting sub-surface width (W B) is measurable along the bisector line (L B); and an axial cutting sub-surface width (W A) is measurable along the axial tangent line (L A); wherein the rake ridge of one or more of the teeth is continuously curved from the bisector line (L B) until at least an axial location rearward of the corner relief surface.