A very good shave - I used a ridiculous amount of soap, which is apparently what is required in order to get a good lather going with hard water. I did something right when honing the Friodur – trouble is, I don't quite know what.
Watched it, thanks! Great video, with very helpful illustrations, and you dumbed down the material science to the point where I had the impression understanding 😂
You seem to be on your way to wetstonetube fame - continue the good work!
That's a very good question. I've been killing the edge on knives since it was first explained (by the president of Shapton US) that it is a "good idea" to remove any fatigued metal at the apex before building a final, finished edge. He's an avid woodworker, so he called this jointing the edge. I have not, ever, seen analysis that would support fatiguing at the edge. It's plausible, but I kind of doubt that collisions with surface abrasives that remove metal are leaving metal there long enough for it to fatigue significantly. I do this more because I feel that it "can't hurt", than I feel that it has structural merit. I often forget to kill the edge both on knives and razors, and I have yet to discern a difference.