Contour I applaud your craziness. I love this thing you are trying. I've made a few longbows out of Tonkin Cane which is a type of bamboo. In my work, however, it was cut into strips and then I made a press and used epoxy to bind everything together. Using the whole plant as a "tube" may require you bind the ends of the bamboo (like end of seat post) with some kind of thread to keep the bamboo from splitting. It can be done in a decorative way. I'll keep an eye on this thread. Can't wait to see what happens. Good luck.