Working in a carbon fiber shop was the most unhealthy environment I have ever been in. It's just really bad stuff that does bad things to your body. So I preach caution when cutting it, because I have been there, and know first hand what it does to you. And it ain't good. I attribute some of my lung issues to working there. Just walking past the machines at the beginning and end of my shift, with no safety gear on, was detrimental to my health I think. My buddy that worked there with me for a year or so swears the same thing. And we both religiously wore our our masks.