Patent ID: 6962000

Claim:
A cutting member comprising a plate-shaped substrate on which a tip is provided which is bounded by a cutting edge, which tip, viewed in an imaginary plane extending perpendicularly to the cutting edge, has a profile that at least approximates the equation w=a.d n , where w is a profile thickness (in μm), viewed in a direction perpendicular to a bisecting line of the tip, and d is a distance (in μm) up to the cutting edge, viewed in a direction parallel to the bisecting line, and a is smaller than approximately 0.8 and n is smaller than approximately 0.75 and greater than approximately 0.65, characterized in that the tip comprises an ultimate tip and a basic tip, which ultimate tip extends from the cutting edge over a distance d 1 and has a profile that at least approximates the equation w=a 1 .d n1 , while the basic tip connects to the ultimate tip and has a profile that at least approximates the equation w=a.(d+R) n , where d 1 is smaller than approximately 5 μm, R is smaller than approximately 0.5 μm, n 1 is smaller than n, and a 1 =a.(d 1 +R) n /d 1 n1 .