How to beginning and end of an effective edge
I am trying to learn to sharpen my effective edge, as well as detune the nose and tail. How do I find where the effective edge starts and ends? I know it is the widest part of the board, but it's hard for me to see where. I have tried putting a piece of lined paper on top, measure it with a ruler, but I can't determine the exact points.
If anything, is it better to sharpen more towards the nose and tail or the center of the board?
Same for detuning, more on the effective edge or not?