The present invention relates to a V-notched web formed on a drill insert
of a drill tool assembly. The V-notched web allows greater stability and
feed rates, while decreasing the heat generated at the insert tip. The
present invention is provided by a drill insert comprising a drill insert
body having at least two cutting edges, a web between the two cutting
edges, and a web thinning notch formed on either side of the web. Each
web thinning notch forms a notch cutting edge having a positive rake
angle.