Saw this great Carbon Fiber Tube Dart How-To.
These instructions are good for anyone wanting to make a dart with arrow shafts made of carbon tubing. However, as followed, the dart will only be two arrow shafts long. The instructions can be amended by the reader just by adding a third 1/2 section of carbon tubing to make a 6 foot or even 7 foot long dart. I believe that would be a better construction.