Steve,
Once again you captivate us. No measuring, just a skew to guide your cutting points, no callipers for diameter or picture to guide your eye. Just your skill and years of experience.
But more, many times I've tried to watch a woodturner demonstrate something on YouTube and the video is full of unthoughtful waffle I close the window to get rid of it. You let your tools talk to us, and they talk so well.