b'Fastened for Flight tural components or when you getsaid PCD is the preferred choice into titanium. Heres where a goodfor countersinking composite com-tool coating can make a big differ- ponents. Thats because PCD tools often, no coolant at all, Baumetence. generally hold their sharp ground said. And as anyone who uses cut- cutting edges longer than tools ting tools knows, thats not ideal.Maximum Flow made of other materials thanks to With thinner materials like wingGary Rozema, vice president ofPCDs molecular structure and its skins, this isnt such a big deal, butsales at Amamco Tool & Supplyability to withstand heat in the cut-it can be challenging with the struc- Co. Inc., Duncan, South Carolina,ting zone. Therefore, PCD tools cut cleaner and with less delamination, which are important considerations when cutting any composite.Tool geometry is also a factor when prepping a rivet hole. He said This three-flute, solid-carbide integral pilot countersink is applied with a microstop cage.34MAY 2020Countersinking.indd 34 4/16/20 4:59 PM'