The ornamental design of a cuttinginsert, as shown and described.
FIG. 1 is an isometric view of my new design;
FIG. 2 is a top view thereof; and,
FIG. 3 is a side view thereof.
The broken lines in the drawings depict unclaimed environmental subject matter.
The ornamental design includes a pair of parallel edges defining the inner and outer periphery of a recessed surface. No portion of the cutting insert between each broken line and a respective solid line as seen in FIG. 2 forms any part of the claimed design.