I know this thread is super old, yet found it on a search.

I don't want to sand CF, it is nasty stuff if it gets in your lungs. The health risks are not worth it to me ...just to get a nice edge on an RC car.

However,
Has anyone tried applying enamel paint to the edge of their chassis? No sanding, just enamel paint? Enamel dries glossy, does a good job of filling any minor edge imperfections and if allowed to cure it actually gets nice and hard. ..I am thinking of applying a colored enamel to the edge of my chassis. thoughts??