Discolorations near grind

O

OT_Bit

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Jun 3, 2021
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Hi all,

Just got myself a new knife from Boker (Nessmi Pro).

The blade has some has bright discolorations around the grind. My OCD tells me, that this is where during the factory grinding process, the heat treat of the blade was damaged. Am I overthinking?

Here's some photos of it. I `ve tried my best, but its quite hard to capture it adequately.
https://flic.kr/p/2m8N3DY
https://flic.kr/p/2m8N3v1
The steel of the blade is D2, if that makes any difference.

What do you guys think?
 
Hi all,

Just got myself a new knife from Boker (Nessmi Pro).

The blade has some has bright discolorations around the grind. My OCD tells me, that this is where during the factory grinding process, the heat treat of the blade was damaged. Am I overthinking?

Here's some photos of it. I `ve tried my best, but its quite hard to capture it adequately.
https://flic.kr/p/2m8N3v1
https://flic.kr/p/2m8N3DY
The steel of the blade is D2, if that makes any difference.

What do you guys think this comes from? Am I being making a drama out of something minor here?
 
That discoloration doesn’t seem to have caused excessive heat so it would not have affected the heat treatment. I’m not familiar with Bokers finishing process, seems to have been buffed or something that wandered just off of the cutting edge.
 
It almost looks like the sharpening just finished the blade there more, not sure it's discolored from heat
 
Bevel in that spot might be off from the rest of the edge.
The grinding marks from sharpening usually make the edge appear a slightly different color, since
the edge iisn't mirror polished like the rest of the blade by the factory.
I don't see anything abnormal for a factory edge to worry about, such as blue from heat.
 
That looks like more of a buffing mark than an overheated grind. Maybe they buffed the edge by hand and got a little high in the process. IMO, it’s nothing to worry about.
 
Last edited:
Just a buffing/scuff mark, not damage.

OCD and knives are a bad mix :) .
 
To be sure it’s not a heat treat issue, it’s best to test cut a bunch of old carpet or some sandbags :rolleyes:
 
Yep I'd say they got a little high with the buffer when knocking the burr off the edge when sharpening. No damage done.

Jsega51 said:
To be sure it’s not a heat treat issue, it’s best to test cut a bunch of old carpet or some sandbags :rolleyes:
Click to expand...
Or 16 penny nails. Got to try out the push cut on em.
 
Sorry for my late reply. I`ve been busy trying to cut through the penny nails and concrete bags all week. Seems it really is not a issue of heat treat... :p

Thank you very much for all your replies. My OCD is soothed now :)
 
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