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Originally Posted by Cory
I wouldn't use carbon fibre as the sole material in a frame.
There was a thread about using it in different robot applications, about a year ago. I noted then that if you scratch something made of carbon, even cosmetically, you can cause it to catastrophically fail, with no warning like with metals that will bend.
Seeing as a frame is probably going to get the hell scratched out of it, that doesn't sound too appealing to me.
It's not an easy material to work with either. It can be very hazardous to your health if you don't have a good understanding of what you're doing and take safety precautions.
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Ive worked with carbon fiber on a multitude of modeling projects and Ive never had the problem you've described. Actually if you use the correct epoxy it will be hard enough to scratch it. Actually the structural characteristics of carbon fiber are completely altered by the weave, material, and epoxy. As to being hazardous. Epoxy is essentially a glue. Use a respirator and work in a ventilated area and you'll be fine. It really isn't dangerous as long as your not directly breathing in fumes (I think thats the case with almost all chemicals). Oh and make sure to use gloves and long sleeve shirts.