Arrow bamboo doesn't spread like you are talking about. What the heck, cut some and let dry for a month or so, and clean it up, and try it. You can always sell them at the flea market for child guides......
Uh uh, don't touch that, hey!......swish.....whack. Waaaahhhh, see, I told you not to touch that. Now pick it up and put it back.
Hey!, don't do that.....Picture a piece of cane, swishing back and forth, as a great psychological incentive, to behave......sure worked on me when I was a kid, and testing to see what I could get away with. Needless to say, I got more welts, than what I could get away with.....and what I did get away with, wasn't worth the risk, anyway. So I just did what I was told, and the welts went away.....Not that I was a little brat or anything..... ::)
Wayne