some subtle information about knife sharpening with the Tormek

[Ken S]

This video features two knife experts using a Tormek. Oneof them is Thomas Ericksson, grandson of one of the founders of Morakniv.

https://youtu.be/iYsgxerFKHk?si=fDHKgjQ8N_4QRb_W

Ken

[Rossy66]

Great video, nice and calm.

[tgbto]

I was having a strong feeling of "deja vu". I think this is why :

https://forum.tormek.com/index.php/topic,5601.0.html

[Ken S]

Good point. I had forgotten about my 2024 post. The video can stand on its own merits.

Ken

[Swemek]

Isn't it surprising that he said that the grinding direction doesn't matter? I've been told that the direction against the edge gives shorter burr that's easier to remove, rather than longer burr on gets from grinding away from the edge. Maybe it's splitting hairs in the context?

I have one of theses Mora carving knifes, they are a joy to use and extremely sharp when new, way sharper than the ordinary Moras, also very easy to sharpen and maintain.

Nice video, thanks!

[tgbto]

Isn't it surprising that he said that the grinding direction doesn't matter?

In my experience, the grinding direction doesn't matter (much) in terms of final sharpness. There are some knives, mostly of very soft steel, where sharpening edge-trailing will indeed form a much longer, foil-like burr. However, these steels are so soft that the foil burr will be removed easily anyway ... and edge retention will be bad either way.

That being said, it might be hard to tell from sound and feel alone when you're done honing a foil burr. I'm not sure it takes much longer though.

I also found that grinding edge-leading with the SJ stone might give the impression that there is no burr, when there actually is a line of well-aligned plastified steel just at the edge.

Eventually, I didn't find much of a difference in terms of edge retention between edge-leading and edge-trailing.

Maybe it's splitting hairs in the context?

Or whittling hair ? I don't know if it was intentional, but nice one anyway