Patent ID: 8439608

Claim:
A shim for use with a cutting insert containing a plurality of coolant inlets and wherein coolant enters the shim and passes into the cutting insert, the shim comprising: a shim body having a first side surface and a second side surface; the shim body containing a cavity, the cavity defining a first opening in the first side surface and a second opening in the second side surface, and wherein the first opening providing a first level of coolant communication to the cutting insert and the second opening providing a second level of coolant communication to the cutting insert wherein the shim body having a generally circular peripheral edge, and the first opening including a first generally elongate arcuate opening portion extending for a first angle about the peripheral edge, and the second opening including a second generally elongate arcuate opening portion extending for a second angle about the peripheral edge, and the second arcuate angle being greater than the first arcuate angle.