I have yet to get them done, but I got some tonkin from Bamboo and Rattan Works. We've used them many times for rattan for kids bows. I've had people tell me to get the 8-10mm, 4 footers, then cull them out. The helpful fella at B&RW recommended I go with a 6 ft length that's 10-12mm on the big end, then glean your arrow from within that stake. You'll get more good 'uns. I believe I actually
will get more keepers this way. I have a bunch straightened and sanded and cut to about 3-4 feet right now, just haven't gotten them done yet. I'll post pics when I do. Hmmm, maybe if some of you folks come to MOJam next summer, there'll be some sorted bundles of nice straight shafts in the auction or ready for trade.
p.s. This has nothing to do with suppliers, just the info on using 6 footers.