Easy way to cut and shape Carbon is using Permagrit Tools. These are madefrom tungsten carbide grit brased to steel. We make cutting discs to fit a Dremel etc. Also a large range of hand tools.
We supply McLaren, Jodan, Williams etc, and they use the tools everyday !
http://www.permagrit.com
Give me a ring if you want to know a local stockist. 0800 298 5121
Regards, Ian