Russian knife - weird design or just need proper sharpening?

Joined
Jul 18, 2016
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1
Hello
I am a knife newbie.
I got this knife... looks sharp, but cant cut tomatoes with it..
Should i remove more metal and dont care about the black cover? And the blade thickness - is it normal?
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Looks to me from the pics that you have a hollow ground, half serrated blade. A hollow grind is where the grind of the knife (the part that tapers from the flat of the blade to the edge) is concave, which means that it can take a fine sharp edge if sharpened correctly. I wouldn't bother sharpening the serrations, the jagged part of the blade closer to the handle, because you'll need more specialized stones for them, and they generally don't need to be as sharp as the plain edge of the blade as the geometry of the serrations will still cut even if they get somewhat dull. For the top half of the blade (where it's a plain edge), proper sharpening is all that it will need. A tiny bit of black coating near the edge will probably be ground away as it is sharpened, but won't make a difference, and if the knife is sharpened right, will look fine. When sharpening, try to angle your stone so that you don't scrape against the flat of the blade, where the grind and flat meet. Make sure you only make contact with the edge. The blade looks a bit thick to me, but I've also seen guys make knives with 3/8" and above blades. I'm definitely not saying you should go with a blade that's 3/8ths thick, but your blade shouldn't have any trouble for most tasks being that thick. I would recommend either handing it off to someone to sharpen, or looking into buying an entry level Lansky sharpener. They're relatively inexpensive and can put hair popping edges on knives with enough practice. There are plenty of tutorials on youtube on how to use them.


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Cool. I have never heard of that brand before. I would put a razor edge on that puppy in a heartbeat.
 
Hello
I am a knife newbie.
I got this knife... looks sharp, but cant cut tomatoes with it..
Should i remove more metal and dont care about the black cover? And the blade thickness - is it normal?

Looks thick (is that 5mm?) Yes, you'll probably need to thin it a bit, and will remove some of the black coating. (Not a first choice for a kitchen knife). ;)
 
That looks like a "tactical" folder. They typically aren't made/designed for slicing tomatoes (although some can).

If you want a knife for slicing tomatoes I would suggest buying a steak knife or similar kitchen-oriented knife. They can often be found for very cheap and are ready to cut right out of the package with no need to sharpen or modify them.

I think you would have to put a lot of work into that knife to make it a good tomato slicer. You'd have to grind off a lot of steel.
 
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