A method for machining a plurality of slots in a disk-shaped metallic alloy part using a slotting cutter, characterised by: retaining a plurality of cutting inserts (104; 204; 304) within a cutter body of the slotting cutter, wherein each cutting insert of the plurality of cutting inserts (104; 204; 304) is retained upon the periphery of the cutter body using a wedge-like fastener which is secured to the cutter body using a screw, and each cutting insert of the plurality of cutting inserts (104; 204; 304) is securely retained by the corresponding wedge-like fastener within a corresponding retaining slot in the cutter body; retaining a disk-shaped metallic alloy part in a part holder configured to move the metallic alloy part; operating the slotting cutter to cause the cutter body to rotate about a rotation axis of the cutter body; positioning the metallic alloy part using the part holder so that a first desired slot location on the metallic alloy part is placed in line with the plurality of cutting inserts (104; 204; 304) and at a height that allows the plurality of cutting inserts (104; 204; 304) to form a slot of a desired depth when cutting the metallic alloy part; moving the part holder in a direction orthogonal to the rotation axis of the cutter body such that the rotating plurality of cutting inserts (104; 204; 304) contacts the metallic alloy part as the metallic alloy part moves orthogonal to the rotation axis of the cutter body, thereby cutting a first slot through the metallic alloy part at the first desired slot location; returning the part holder to its original position; rotating the metallic alloy part to index the metallic alloy part so that a new desired slot location on the metallic alloy part is placed in line with the plurality of cutting inserts (104; 204; 304) and at a height that allows the plurality of cutting inserts (104; 204; 304) to form the desired slot depth when cutting the metallic alloy part; advancing the part holder relative to the cutter body such that the rotating plurality of cutting inserts (104; 204; 304) contacts the metallic alloy part as the metallic alloy part moves orthogonal to the rotation axis of the cutter body, thereby cutting a slot through the metallic alloy part at the new slot location; and repeating the positioning, moving, cutting, returning, rotating and advancing steps to form slots around the circumference of the disk-shaped metallic alloy part, wherein the metallic alloy part is subsequently further machined to provide a rotating component for a turbine. retaining a plurality of cutting inserts (104; 204; 304) within a cutter body of the slotting cutter, wherein each cutting insert of the plurality of cutting inserts (104; 204; 304) is retained upon the periphery of the cutter body using a wedge-like fastener which is secured to the cutter body using a screw, and each cutting insert of the plurality of cutting inserts (104; 204; 304) is securely retained by the corresponding wedge-like fastener within a corresponding retaining slot in the cutter body; retaining a disk-shaped metallic alloy part in a part holder configured to move the metallic alloy part; operating the slotting cutter to cause the cutter body to rotate about a rotation axis of the cutter body; positioning the metallic alloy part using the part holder so that a first desired slot location on the metallic alloy part is placed in line with the plurality of cutting inserts (104; 204; 304) and at a height that allows the plurality of cutting inserts (104; 204; 304) to form a slot of a desired depth when cutting the metallic alloy part; moving the part holder in a direction orthogonal to the rotation axis of the cutter body such that the rotating plurality of cutting inserts (104; 204; 304) contacts the metallic alloy part as the metallic alloy part moves orthogonal to the rotation axis of the cutter body, thereby cutting a first slot through the metallic alloy part at the first desired slot location; returning the part holder to its original position; rotating the metallic alloy part to index the metallic alloy part so that a new desired slot location on the metallic alloy part is placed in line with the plurality of cutting inserts (104; 204; 304) and at a height that allows the plurality of cutting inserts (104; 204; 304) to form the desired slot depth when cutting the metallic alloy part; advancing the part holder relative to the cutter body such that the rotating plurality of cutting inserts (104; 204; 304) contacts the metallic alloy part as the metallic alloy part moves orthogonal to the rotation axis of the cutter body, thereby cutting a slot through the metallic alloy part at the new slot location; and repeating the positioning, moving, cutting, returning, rotating and advancing steps to form slots around the circumference of the disk-shaped metallic alloy part, wherein the metallic alloy part is subsequently further machined to provide a rotating component for a turbine.