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That's why honing is an art, not a science. Try asking Picasso or Dali, or Kandinsky how they painted so well...er, build a time machine and do that.

Good point about auditory cues: I think they match pretty close to my above tactile descriptions.

I never got much from watching the water/slurry ahead of the blade though. Too distracting from...

Good question:

to me, "feedback" is the amount of drag you get as you slide a razor over a given hone. This feeling will change as you get closer to a shaving sharp edge.

On my limited...