08-29-2019, 02:33 PM
(08-29-2019, 11:45 AM)EOU Wrote: It would seem that this might resonate with some of our members. It's an excerpt from a more extensive piece and authored by Keith Johnson with Tomo Nagura.
About sharpness – most people regard edge width to be the main critical concern where sharpness is concerned. To a lesser degree, the topography of the edge’s apex can be a factor also. It can be smoother or toothier, and that can aid or distract from its cutting ability. But at the end of the day, width of the edge is the common denominator that must be factored in first and most heavily. Edge width is controlled by bevel angle and only bevel angle.
So - are we to take from Keith that the final arbiter of "sharpness" will be determined by the bevel angle because smaller sharpening angles produce narrower edge apexes or are we to assume that when smaller angles are utilized the sharpness is improved due to improved geometries of the edge?
We know how Rupert would answer this question - He'd say "Yes" and Rupert is seldom wrong.