using a nagura to remove surface scratches

I found out that a nuraga is hard enough to remove surface scratches from kitchen knives. I don't know if this would be suitable for steels like cpm-3v but on these middle class kitchen knives 57-60 HRC it works good enough.

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Please watch: "Battle of the Ultimate Chopping Knives! Which is the Best!??"
https://www.youtube.com/watch?v=P1uxSw3IP9M
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