SYSTEMS AND METHODS FOR FORMING OPENING IN STACK

摘要

PROBLEM TO BE SOLVED: To solve a problem that multiple different tools or coatings for the multiple different tools are required to effectively and/or cost-effectively drill multiple layers formed of different materials.SOLUTION: A cutting tool 100 includes a shank 120. The cutting tool 100 also includes a first portion 112 including at least a first coating 116 or both the first coating 116 and a second coating 118. The first coating 116 at least partially covers the first portion 112. The cutting tool 100 also includes a second portion 114 between the shank 120 and the first portion 112. The second portion 114 includes the second coating 118. The second coating 118 at least partially covers the second portion 114.