Cutting and triming carbon fiber parts can be done with diamond coat carbide and ceramic cutting tools. Carbides are less expensive but have a thermal "footprint" that is transfered to the carbon over cutting time, thus causing degradation of resin structure. Ceramic cutting tools do not have...
Compositepro has several good points, including number 3 which dicusses resin heat resistance. Try using a ceramic endmill if you decide on a production volume.