DWS: Aren't most of the holes in composite panels done by orbital drilling nowadays? Drilling CFRP panels with ordinary drills usually leaves irregular holes with chaffed edges.
Edit: at least it seems that 787 panels are drilled this way:
Boeing Places Subsequent Order for Orbital Drilling Equipment for 787 Dreamliner Final Assembly
Last edited by Grunff; 22nd Oct 2013 at 21:14.