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> All the people saying this knife does anything remarkable clearly have no experience in maintaining a decent knife blade.

Yes? I mean, that's one of the main points of the gadget, as said in the advertisement.

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The blade must be sharpen regardless, the apex won't stay sharp on its right own. The vibration does help but it doesn't do any actual cutting if you dull the blade.

does nobody keep their knives in a pyramid anymore?

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