Will chopping hard destroy my new knives?
I bought a new set of knives and my dad used the chopping knives to cut onions.
Instead of chopping by slicing the onions with the usual technique, he was using his two hands to hold the knife by the extremities and chopping the onions this way. Is this going to destroy my knives?
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Hard chopping will not destroy the knife, but it will dull the knife faster. The edge of a knife is extremely narrow. As a result, regular use will push the edge to the left or right, leading to burrs. Hard impacts accelerate this process, and can even cause the edge of the blade to chip. Knife blades stay sharp longest when they are used gently and on soft cutting surfaces.
He probably didn't "destroy" them...all knives dull with use depending on what you are cutting, what you are cutting ON, frequency of use...etc. Whether you slice, dice or chop, you should get in the habit of sharpening and honing your knives regularly. Higher quality blades stay sharp longer (and take a sharpening better), but over time, all knives need care if you want them to have a useful life
Probably not, if it's onions
Onions are a soft product so the damage from chopping this (weird) way is much more affected by what kind of cutting surface he's using rather than the product itself.
This is because the greatest impact pressure on the knife will be the point where it hits the hard surface of the board.
If you're worried about knife damage, just make sure he:
* Uses a softer cutting board (those cheap, thick white plastic boards are pretty good for this)
* Doesn't try to do this with products harder than onions, like coconuts, bone, or his own fingers...
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