04-12-2018, 10:06 PM
Mr. Sharpco, I'm guessing you used an edge tester to discover cutting paper decreased sharpness by 20. 
Mr. Ken, I don't think anyone misunderstood what you were saying.
Cutting paper is actually useful and gives a "general" impression of sharpness. Carefully dragging the blade against the edge of paper can actually indicate toothiness and burr. I can feel and hear it. I've done it for so many years I have a pretty good idea of how it feels and what it means.
That said, of course it has nothing to do with actually measuring edge sharpness. It's more like knowing your razor is dull because it's getting a little grabby, uncomfortable and taking more strokes when shaving. I can tell when the razor is dull without knowing how sharp it is.
Mr. Ken, I don't think anyone misunderstood what you were saying.
Cutting paper is actually useful and gives a "general" impression of sharpness. Carefully dragging the blade against the edge of paper can actually indicate toothiness and burr. I can feel and hear it. I've done it for so many years I have a pretty good idea of how it feels and what it means.
That said, of course it has nothing to do with actually measuring edge sharpness. It's more like knowing your razor is dull because it's getting a little grabby, uncomfortable and taking more strokes when shaving. I can tell when the razor is dull without knowing how sharp it is.