How sharp is sharp?

[Jan]

Thanks for mentioning the source, I was afraid I am missing something.

Jan

P.S.: Might be of your interest: "Can you sharpen a razor blade to a 1 atom width blade?".
https://www.reddit.com/r/askscience/comments/1oboky/can_you_sharpen_a_razor_blade_to_a_1_atom_width/

[stevebot]

I have been interested in chemical sharpening for a long time. It is great for sharpening a point but I have found no way to apply it to an edge. Chemical sharpening is used in production of fish hooks.
A friend is in the physics dept of a local university and has access to various exotic techniques like electron beam honing and deposition of a single atom layer of diamond but again, no practical way to apply it to everyday knives.

[SharpenADullWitt]

The only chemical sharpening I was aware of, has to do with files, and my understanding is, restoration attempts.

[Jan]

As Steve confirms, for the time being, the chemical sharpening to 1-atom edge has no practical application in everyday sharpener's life.

The single atom tungsten tip is high-tech scientific tool only. But it is surely not a final stage, there are much smaller particles in the micro world!   

Jan