I ordered mine from Bamboo and Rattan Works. We always got our rattan for kids bows from them. He recommended I get the 10mm (7/16 on the big end) in 6 ft lengths and I'd be able to get more good shafts from the middle somewhere and have fewer "tomato stakes" left over. Claimed that he learned that from someone who makes cane arrows exclusively. So far, he's right. I started out straightening the whole 6 ft shaft, then got much better at finding the "good 4 foot sections" before I straightened. I have plenty of paint and glue stirring sticks from the cut-offs anyway! We'll see when I'm done with all of them. I'm in the process of building a spine tester right now, even though a variety of cane arrows will shoot good out of about any bow. Then plan is to make the arrows, with the exception of fletching them, then sort them according to what shoots best from what bow, then fletch them.