George,
As usual good advise for beginner and advanced woodworker.
I recently watched a video of someone sharpening a chisel. They were trying to work a straight bevel, but the top of the handle was moving considerably up and down. Seeing this gave me a new insight on my own sharpening method.
I have made videos of myself to demonstrate one thing and learned more about what I was doing wrong than just showing a technique.
It may be good for 'modern' woodworkers with access to a video camera to watch themselves using a saw to find the room for improvements.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)