Alrighty then...next step...the nock insert. This step is crucial to get right with this type of phragmites. The walls are too thin for a simple cut in nock like you would use on cane, bamboo, or the heavier walled phragmites found in the southwest from West Texas to California. So we make an insert that butts up against the node on the inside of the shaft. The insert must be fitted as perfectly as possible. The inside of the node has a rounded socket shape so our insert must be rounded to fit. Then its just a matter of thinning the insert to fit inside the shaft. If you get it to thin, there will be a gap between the walls of the phragmites and the insert. That won't glue well and the nock will fail. If you don't get the insert thin enough, you'll split the shaft while forcing it in. Once I get the insert to the proper shape and size, I squirt a little glue in the shaft and spread a little glue on the insert. Then carefully and gently install the insert. I say careful because the excess glue can crack the shaft If you don't give it a chance to ooze out. Now I generally just whittle down the end of a dowel to fit, glue it in, let the glue dry and then cut the excess dowel off. I do this so I have something to hold on to when whittling and installing the insert. If you do it this way, its a good idea to put a temporary wrap of string around the nock area until the glue dries. Then you can remove the string and saw off the excess dowel.