I used a arrow sized diameter culm growing on the bank as my upright for splitting. I used a smaller 1/4" segment to make the splits horizontally.
I started my four way split with two cuts on the big end. I placed the resulting quarters on each side of the splitting pieces. I will explain this more in detail on primitive archer's website and forward the link. The benefit of this is that it will have my pictures uploaded.
Anyhow, I was able to split quarter sections from 3-4 feet in length. This is light-years ahead of what I had previously done. Splitting green cane really helped.
However I knew I needed a longer split than this so I kept working it. Fortunately, each time the four split stopped it was always at a node and one quarter was still attached to the remaining stalk. This also happened at smaller diameter sections but not a predictable diameter. So i used my pocket knife to split off and whittle the remainder to get lengths proper for making a string.
I cannot stress how much better this worked compared to working seasoned cane! It was not a perfect equal four way split so I cannot thus far make four strings from one cane, BUT I can make a one string from one culm and that beats the zero I was sporting before.
I truly hope you do not have to make the string with green cane, as I was pressed for time and have to let the project sit for a while longer while I tend to family and work matters. My next step is to smooth down the string to a mostly round cross section. Then I have to learn how to make those woven cane bands- as they function as the nocks on that bow.
Any how that is my most recent excursion with splitting cane. I saved the smaller splits in case I can make a basket form them some day.
As Meriwether Lewis wrote many days to begin his journal entry, "We preceded on".