I think my question has been forgotten or maybe not noticed

Quote:
Oh, one thing I noticed in the Razel video
On the back , the half of the spine that is nearer to the handle , there are some kind of serrations or something. What are these for ? If a Razel is that thick I don't think that was a saw on the back , was it ?



Looks like a saw but , well, is just too thick for a saw. Is there any other uses for a saw-like spine ?