KG, thanks for your very interesting post.
Let me apply model BESS measurements, roughly based on Mike’s data, on the estimation of edge apex width.
Assume a stropped blade with 250 gf score. Repeated testing after 2 hours shows 260 gf.
What we can say about apex width?
If 250 gf corresponds to 500 nanometers of apex width,
than 260 gf corresponds to 520 nanometers of apex width.
If we attribute the small sharpness drop to oxidation processes at the edge, than we can say that on each side of the edge a 10 namometers thick layer of oxides has grown.
But be careful. When another retesting after 8 hours shows again 260 gf score, we would have to conclude that the oxidation rate dropped dramatically or look for another explanation.
Jan
Let me apply model BESS measurements, roughly based on Mike’s data, on the estimation of edge apex width.
Assume a stropped blade with 250 gf score. Repeated testing after 2 hours shows 260 gf.
What we can say about apex width?
If 250 gf corresponds to 500 nanometers of apex width,
than 260 gf corresponds to 520 nanometers of apex width.
If we attribute the small sharpness drop to oxidation processes at the edge, than we can say that on each side of the edge a 10 namometers thick layer of oxides has grown.
But be careful. When another retesting after 8 hours shows again 260 gf score, we would have to conclude that the oxidation rate dropped dramatically or look for another explanation.
Jan