EDGE RETENTION/ROLLING PART II

[KnifeGrinders]

I think the same, sharpenging through chipping it is the most plausible mechanism.
The above results are for edge-leading grinding where chipping is a given; if the "sharpenging through chipping" is true, then edge-trailing would work worse.
To check that, I tried twice to grind edge-trailing on Tormek, using our Frontal Vertical Base and got sharpness worse by 100-200 BESS, no matter how long I would spend on the wheel.
It is "sharpenging through chipping".