06-26-2017, 06:52 PM
Very interesting Mr. Mark! 
I routinely get blades 150g or sharper using 80 – 180 grit belts. Not a problem.
“I was stunned with the result. I would not have guessed how sharp 140 grit can be. Push cutting paper? Sure enough! Unbelievable! Bess scores with my KN100 were kinda ragged though, from 130s to 180s along the length of the blade. This was after slicing and push cutting a few feet of thick cowhide. “
Yes! And that blade will never just ride on the surface of things like nylon rope, plastic, tomato skin and the like. I’ve found no problem shaving hair either, but being so toothy it’s not a shave for delicate skin or the faint of heart!
I just received some 120 grit Cubitron II belts and sharpened a blade. I too was amazed by the results. 140g sharp and the blade slices through everything I can find to cut. No problem slicing through a 3/4" roll of newspaper cleanly. No riding, just easily slicing through.
I also have some 150 grit Cubitron (not Cubitron II) belts coming this week.
I have a bunch of comments on your post Mr. Mark, but it will take some time to compose. I’ll post more on that later. I will also post much more on my own results and include microscopy and sharpness testing results. Those comprehensive posts take a lot of work and time to do, so it will take some time to complete.
A question for you Mr. Mark: When you say, “Even a Kally vaporizes steel instantly at 150 grit, and it's totally impossible to get a clean edge.”
What do you mean by “get a clean edge?” Do you mean that it’s difficult to remove the burr?
I routinely get blades 150g or sharper using 80 – 180 grit belts. Not a problem.
“I was stunned with the result. I would not have guessed how sharp 140 grit can be. Push cutting paper? Sure enough! Unbelievable! Bess scores with my KN100 were kinda ragged though, from 130s to 180s along the length of the blade. This was after slicing and push cutting a few feet of thick cowhide. “
Yes! And that blade will never just ride on the surface of things like nylon rope, plastic, tomato skin and the like. I’ve found no problem shaving hair either, but being so toothy it’s not a shave for delicate skin or the faint of heart!
I just received some 120 grit Cubitron II belts and sharpened a blade. I too was amazed by the results. 140g sharp and the blade slices through everything I can find to cut. No problem slicing through a 3/4" roll of newspaper cleanly. No riding, just easily slicing through.
I also have some 150 grit Cubitron (not Cubitron II) belts coming this week.
I have a bunch of comments on your post Mr. Mark, but it will take some time to compose. I’ll post more on that later. I will also post much more on my own results and include microscopy and sharpness testing results. Those comprehensive posts take a lot of work and time to do, so it will take some time to complete.
A question for you Mr. Mark: When you say, “Even a Kally vaporizes steel instantly at 150 grit, and it's totally impossible to get a clean edge.”
What do you mean by “get a clean edge?” Do you mean that it’s difficult to remove the burr?