During the composite routing process, one of the last things people typically think of is cleaning and conditioning of the parts. Keeping carbon graphite router bits clean and well maintained is very important, though; just as important as keeping them sharpened and stored in a safe place. Composite routers and bits should be cleaned and sharpened periodically, and stored in tool boxes that don't allow them to roll around and come in contact with other tools.
There is often only a small amount of clearance between the cutting edge of carbon graphite router bits and the body. This is where resin can build up can significantly add to the friction created during the composite routing process. Even the most expensive and high-tech composite routers can't function properly when they are used with dirty, dull and poorly maintained bits.