Originally Posted by Koffee Brown

Ok Khuon, I scratched it with a knife. All I see now are metallic scrapings. What does that mean? Hee hee... just kidding! Well, it must be carbon. I thunked it with my fingernail, and it has a kind of dull thud. When I thunk my frame, which is aluminum, the frame has a different sound. Maybe carbon then?

Koffee