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Drill bits for carbon fiber? Sharpen?
In past times the HSS and bright finished bits performed fine for the handle materials I used. With carbon fiber the wear has become unacceptable since I could get about 8-10 good clean holes before they would begin to result in a slightly fuzzy hole. Probably more of an obvious issue with the 1x1 and 2x2 patterns. The random CF patterns there is a bit more epoxy in the layup so the fibers don't seem to be as wearing when drilling.
I ordered a packet of cobalt but don't expect a drastic difference in number of holes.
Do the drill bit sharpeners work well in the smaller sizes? 55, 53/1.5mm and like?
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Mike 
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