[Culverin]

Sharpness will come from your coarse stone (Sub 600 I think?)
If sharp, a 400 should shave arm hair.
You could move up to a 100 like unit mentioned, except if it's still not sharp at 400 then you still need to work on technique.

Did you form a burr? Then remove it?
That's where I went wrong with my first year of sharpening.
I skipped that.


I think higher grit = less "tug" on the blade when slicing.
It'll be a smoother cut.

I think going "through" stuff has to do with blade thickness "behind the edge",
as in the thickness of that first 0.5 cm.
And the horizontal tomato thing... Unsure if that's a proper metric for it.