The reinforcing fibers of composite materials, such as CFRP, GFRP and Kevlar panels, are tough and wear-resistant. Tools wear out rapidly during machining composite. The diamond coating can significantly increase the tool life. Delamination, splintering, and fraying are the most common challenges during composite machining. Almost every type of composite material requires unique tools and machining methods. Selecting the correct tools is critical to successful composite material machining.