Carbon Fiber in Aircraft CUTS CLEAN HOLES. SHREDS COMPETITION. Abstract When drilling carbon fiber reinforced polymer (CFRP) wing spars, an aircraft manufacturer struggled with poor quality cuts and expensive scrap until switching to RobbJack’s new Solid PCD W-Point drill. The Problem Prized for its high rigidity and strength-to-weight ratio, CFRP is notoriously difficult to machine without delamination, uncut fibers and fiber pullout. One manufacturer was going through 25 carbide drills to make one ship set of wing spars, scrapping many very expensive parts along the way. The process was intolerably costly and unstable. Then RobbJack took on the challenge. OUR SOLUTION: THE SOLID PCD-TIPPED W-POINT DRILL, DESIGNED SPECIFICALLY FOR CARBON FIBER COMPOSITES This powerful, newly developed too

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