Is there still a wire burr at 200 Bess?

[ABall]

Thanks for link Ken, I have seen all his vids over the years and you just forget don't you. I was fixated on speed and when the composite wheel came out he did a vid going from CBN 160 (amongst a couple of other options) straight to composite. That was was probably when I stopped looking for improvement and I just stuck with it. He did also move onto green chromium oxide on the leather wheel, I never really tried that until I bought the Bess tester which is quite a few years later. I will have to go over the Globals at some point.

[Brock O Lee]

Yes I am convinced that you still have a burr at 200 BESS.

I started to test my edges after I read Vadim's opinion about lingering burrs over 100 BESS. In my experience he was spot on.

I also like and use his very simple Rizla cigarette paper cutting test to detect a burr. In my experience, if a fresh edge (finished at 1000+ grit and stropped to remove the burr) does not cleanly slice thin Rizla paper from heel to tip, I know I still have a burr. This burr is small enough that I cannot see it under bright light or feel it. A sub-1000 grit edge or even a tiny burr does not cut Rizla paper cleanly.





I sharpened the Umnumzaan above on the Edge Pro, but the Tormek is no slouch... At the moment I feel I can get sharper edges with the diamond wheels than the SG. This was on the DE-250 diamond wheel and stropped.



I was always a "coarse/toothy edge" kinda guy, until I read this article. These incredible micrographs made me more aware of persistent burrs, and made me pay much more attention to deburring. This whole site is a gold mine of knowledge.

https://scienceofsharp.com/2024/02/03/seven-misconceptions-about-knife-burrs/