I have plenty of bamboo but I think the largest diameter I have is about 3", and I don't have much that large. That and the wife doesn't want me to cut any of it... even that which is growing thru the driveway...
Good grab.
I believe he is out of town this weekend. I think he mentioned that on another item.
I believe I pm'd him before you got your answer but as far as I am concerned you are in front of me.