There's a guy over here in the U.K. named Alan Timmons who made a few carbon fiber reso's back in the mid-80's called F1 guitars (...so called 'cos his main job was constructing racing car bodies!..) The have an interesting sound - extremely loud & with a very light weight. Didn't win over the traditionalists though...
Slide On!
Ian.
www.diamondbottlenecks.com 