To drill a hole I put the carbon fibre on a old block of would and use a a pillar drill (a hand drill will be fine) to make a 2mm pilot hole. Don't use too much force when breaking throught the bottom or the carbon fibre will splinter. Then I use a Dremel with a 3mm diamond covered grinding tip to enlarge the hole from both sides for a nice clean hole.
If you don't have a Dremel then make the pilot hole and use the final size drill bit from both sides for best results.
To countersink a hole use a good carbon carbide counter sink bit. You can do this with a hand drill but be careful and keep the drill straight so it doesn't wonder off centre. For best result use a pillar drill to prevent it wondering
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