END MILL

A finish end mill configured for rotating about a central rotation axis (AR) defining opposite axially forward and rearward directions (DF, DR), and opposite rotational preceding and succeeding directions (DP, DS), the preceding direction (DP) being the cutting direction, the end mill comprising a shank portion; and a cutting portion extending forward from the shank portion to a cutting end face, the cutting portion comprising an effective cutting length (LE), a diameter (DE), a plurality of integrally formed teeth, and a plurality of flutes alternating with the plurality of teeth, each flute having a helix angle and a flute depth each tooth comprising a rake surface, a relief surface succeeding the rake surface and having a relief surface width measurable in a plane perpendicular to the rotation axis (AR), a cutting edge formed at an intersection of the rake and relief surfaces, a relief edge spaced apart from the cutting edge and formed at an intersection of the relief surface and a flute surface of the flute succeeding the tooth and a tooth area defined between a first radial line extending from the cutting edge to the central rotation axis and a second radial line extending from the central rotation axis to a nadir of the succeeding flute, characterized in that the plurality of integrally formed teeth are five or more teeth at an axial location in a front half of the effective cutting length the teeth have an average radial rake angle value, with one or more teeth having a smallest radial rake angle value, and one or more teeth having a largest radial rake angle value, the cutting portion has an effective cutting length greater than 2.5D, at least some of the teeth with different radial rake angle values have values different from all other non-identical values by 2° or more and each flute of the plurality of flutes has an increasing depth with increasing distance from the shank.