Kippington
A small green parrot
...does it affect the knife when it's so "short" like a chefs knife?
Let me put it this way - Untempered martensite is considered quite brittle, but breaking it with your bare hands - edge to spine - is nowhere as easy as you probably think. I'd very much need a large hammer to do it....if there is enough of a difference, even if it could be measured, for a human to feel.
Despite this, many differentially hardened blades pull themselves apart within seconds along this axis, sometimes in multiple spots. So yes, I totally think the effect would be strong enough for a human to feel.
I could probably come up with a better example, but it's 2:30am here.
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