How to Sharpen a Knife

Feb 24, 2019 2:16 AM

We see famous chefs using this tool and we sometimes mistakenly believe it is sharpening the knife. It actually straightens the blade, which is an important part of maintenance each time the knife is used.

The angle is key when honing your blade.

This tool is used in many kitchens for knife sharpening. It is best used when knives are just becoming dull or difficult to use. Holding the knife straight up in the device and pulling it from base to tip is the best way to see results. The left side is fine and the right side is coarse.Use the coarse side for a few swipes, then the fine side. (Edit for accuracy)

The whetstone is the most advanced sharpening tool, but also the most useful for knives that are extremely dull or nicked.

Soak the stone in a tray of water and place on a towel. Never use the stone while it is dry.

This method is also best with a 20° angle. You can fold paper to help guide the process. We know the corner is 90°.

Fold in half to achieve 45°.

Fold in half one more time for 22.5°, which is close enough to 20°.

Hold the knife to the Whetstone, placing the folded paper behind it. This will give you a good feel for 20°. Pull the knife back from base to tip across the stone for a few swipes, then do the same to the other side of the knife. https://youtu.be/Wk3scs5FqCY

I have all of these and the whetstone does actually take a little practice to get good with. You want to maintain the angle every stroke.

7 years ago | Likes 1 Dislikes 0

The blade edge "feathers" with use. Sharpen away from the blade's edge (not into it as you may even see chefs mistakenly do). If you sharpen toward the blade's edge, you force the "feathers" to bend further and have to keep sharpening until the "feathers" fall completely away to expose a new blade edge. It can work, but you significantly reduce the life of the knife.

2 years ago | Likes 1 Dislikes 0

Not all knives run at 20 degrees either, some run at 17 degrees (japanese mostly), and cleavers at 30 degrees

7 years ago | Likes 1 Dislikes 0

The most advanced tool for a heavily nicked blade is a grinding wheel. After that can come the whetstone.

7 years ago | Likes 2 Dislikes 0

There are also many comments with extra knowledge about knives

7 years ago | Likes 2 Dislikes 0

Instructions too complicated. Got dick stuck on ceiling fan.

7 years ago | Likes 2 Dislikes 0

Hey! How do I sharpen my kitchen scissors! I messed up and used a knife sharpener and now they're super blunt. I have a whetstone to fix it.

7 years ago | Likes 2 Dislikes 0

Paul sellers Has a Video about scissor sharpening on Youtube. https://youtu.be/4rVt6ZLB9Wg

7 years ago | Likes 4 Dislikes 0

I only hone my 8 year old knife and it still splits atoms it's so sharp. I'm not sold on most articles dismissal of it as a sharpening tool.

7 years ago | Likes 2 Dislikes 0

Use what works!

7 years ago | Likes 1 Dislikes 0

A steel doesn’t straighten the blade, it straightens the cutting edge which tends to deform with use.

7 years ago | Likes 1 Dislikes 0

Peasants, the knives I bought have someone come to my house and sharpen them for me.

7 years ago | Likes 1 Dislikes 0

Left is fine, right is coarse.. But whatever.

7 years ago | Likes 2 Dislikes 0

If you want to learn to use a whetstone check this guy out. His other vids will also help you pick a stone https://youtu.be/KB87xoFm46g

7 years ago | Likes 1 Dislikes 0

I just got a stright razor but I don't think it's sharp enough. Is a wet stone plus the leather thing my best bet?

7 years ago | Likes 3 Dislikes 0

Everyone on here has an opinion, but I’m sure those would get your straight razor nice and sharp.

7 years ago | Likes 3 Dislikes 0

This makes me want to scream on several different levels... There is good information here but terrible misconceptions!

7 years ago | Likes 2 Dislikes 1

Neat.

7 years ago | Likes 5 Dislikes 1

Can you sharpen damascus steel on a stone or do you need a ceramic or tungsten steel?

7 years ago | Likes 1 Dislikes 0

hold the knife at 12-14* depending on the specific edge...

7 years ago | Likes 1 Dislikes 0

If you have a knife that you have a lot of love for or money put into, don’t use a pull-through. If it’s a basic kitchen set, go nuts.

7 years ago | Likes 191 Dislikes 2

Pull through 'sharpeners' tear the edge of the blade, often leaving an uneven, almost serrated edge. It cuts after, but it doesn't slice.

7 years ago | Likes 41 Dislikes 4

But will it keel?

7 years ago | Likes 19 Dislikes 0

v

7 years ago | Likes 10 Dislikes 0

All smooth edges look serrated on a microscopic level. It is the micro serrations that actually cut. A quality pull through used properly

7 years ago | Likes 10 Dislikes 0

Does just fine for 99.9% of the population. I'm not a professional, but I butcher plenty of my own animals and while I can make a supreme

7 years ago | Likes 9 Dislikes 0

Edge with a whetstone, a pull through gets the job done much more quickly.

7 years ago | Likes 9 Dislikes 0

The paper angle tip is great!

7 years ago | Likes 2 Dislikes 0

There are also diamond boards, which can be used dry

7 years ago | Likes 57 Dislikes 1

My dad had those, as a kid i wondered what kinda special popsicle you got those from

7 years ago | Likes 1 Dislikes 0

I prefer slightly moist diamond boards.

7 years ago | Likes 2 Dislikes 0

They can, but you should still use honing fluid or they clog and the whole process takes much longer. Source: I use diamond plates

7 years ago | Likes 5 Dislikes 0

always move from base to tip. for knives.

7 years ago | Likes 3 Dislikes 0

Personal preference: I aim for 14 degrees.

7 years ago | Likes 6 Dislikes 1

This should consider the individual blade, thick blades should go 20, thin blades ~15

7 years ago | Likes 3 Dislikes 2

its also a matter of how often you want to sharpen. a 15 degree edge dulls 4 times as fast as a 20...but cuts better.

7 years ago | Likes 4 Dislikes 1

We aren’t even talking about chisel style blades, though it seems like they are waning in popularity

7 years ago | Likes 1 Dislikes 1

Can you soak the stone in wood?

7 years ago | Likes 82 Dislikes 13

Only if you soak the wood in water first.

7 years ago | Likes 1 Dislikes 0

It‘s an old reference, sir - but it checks out!

7 years ago | Likes 4 Dislikes 1

Soak the stone in wood that has already been soaked in wood

7 years ago | Likes 5 Dislikes 1

7 years ago | Likes 3 Dislikes 0

No, only logs.

7 years ago | Likes 26 Dislikes 2

Works well to soak it in rocks too

7 years ago | Likes 11 Dislikes 2

The white part is fine

7 years ago | Likes 2 Dislikes 0

My BF just bought me a knife for my bday. Im so concerned Im going to fuck it up. Any tips for the kinds of stone I should get to sharpen?

7 years ago | Likes 3 Dislikes 0

Don't worry. Unless you machine sharpen or break the blade, anything you do is fixable.

7 years ago | Likes 2 Dislikes 0

Personally I'm a big fan of diamond plates (DMT or EZE-lap) because no maintenance and they last forever, but they're a big investment.

7 years ago | Likes 2 Dislikes 0

Unless you use diamond stones, you will need to re flatten them your sharpening stones every so often. Extremely dull knifes can be 1/2

7 years ago | Likes 3 Dislikes 0

Reground with a bench grinder before using the stones.

7 years ago | Likes 3 Dislikes 0

Please don’t do this if you are inexperienced. You’ll get irregular, awful hollow grinds. 15 year old me and a machete can confirm.

7 years ago | Likes 3 Dislikes 0

Beware, these can overheat the knife and affect the temper

7 years ago | Likes 3 Dislikes 0

Very true. I was told you shouldn't let it get too hot to hold.

7 years ago | Likes 1 Dislikes 0

Also, this does not appear to be a reaction gif....

7 years ago | Likes 1 Dislikes 0

7 years ago | Likes 1 Dislikes 0

You shouldn’t let a fine knife get hot at all

7 years ago | Likes 1 Dislikes 0

*

7 years ago | Likes 1 Dislikes 0

45° inclusive is pretty obtuse for fine kitchen work. Fold the 45° paper wedge in thirds and you will have a better edge for fine cutlery.

7 years ago | Likes 2 Dislikes 0

Why they don't tell you to split an angle into thirds: https://en.wikipedia.org/wiki/Angle_trisection

7 years ago | Likes 2 Dislikes 0

It is just fairly easy to roughly fold into roughly equal thirds. Akin to folding a letter in thirds to place inside a standard envelope .

7 years ago | Likes 2 Dislikes 0

Folding a letter into equal thirds is not proven to be mathematically impossible ;)

7 years ago | Likes 1 Dislikes 0

That's not what your mom told me last night!

7 years ago | Likes 1 Dislikes 0

how long would you have to soak the stones for? just a few minutes?

7 years ago | Likes 7 Dislikes 1

You'll need to add some water during the sharpening process anyway, doesn't matter that much.

7 years ago | Likes 1 Dislikes 0

Depends. I do mine for 10 cause that's when the bubbles stop coming out, but I re-wet them while sharpening.

7 years ago | Likes 8 Dislikes 0

If it is a stone that soaks, can you put it in the water until the bubbles stop rising to the surface. Often less than a minute.

7 years ago | Likes 1 Dislikes 0

Depends on the whetstone you're using. Not all use water and not all soak.

7 years ago | Likes 3 Dislikes 1

Use dish soap instead of water or oil

7 years ago | Likes 5 Dislikes 2

Oh really. I might give that a try

7 years ago | Likes 3 Dislikes 0

Whouldn't that seep into the stone and make it rot fromt he inside? I know that they stink like hell when left soaking

7 years ago | Likes 1 Dislikes 0

Never been an issue for me

7 years ago | Likes 1 Dislikes 0

Friend of mine left his stones soaking for weeks (idk why thou)... started smelling like death itselfe

7 years ago | Likes 1 Dislikes 0

Weird, no dish soap has never caused me this kind of issue

7 years ago | Likes 1 Dislikes 0

There are also stones that you use oil instead of water.

7 years ago | Likes 273 Dislikes 5

mineral oil

7 years ago | Likes 3 Dislikes 0

Bar and chain oil

7 years ago | Likes 3 Dislikes 0

Rem oil seems to work pretty well in my experience

7 years ago | Likes 1 Dislikes 0

There are also non-soaking stones that you just splash water on instead of submerging it

7 years ago | Likes 13 Dislikes 0

Iirc they're both the same, except when you use oil on it you should never use water with that stone again

7 years ago | Likes 4 Dislikes 0

Nope water stone loses its performance if you oil it.

7 years ago | Likes 1 Dislikes 0

Hot soapy water soaks can reset this.

7 years ago | Likes 2 Dislikes 0

They aren't. Oil stones are green and have a smooth surface. I would use them if i weren't lazy and just raped the knife with a sharpener.

7 years ago | Likes 3 Dislikes 1

Absolutely, just make sure it’s never dry.

7 years ago | Likes 96 Dislikes 2

7 years ago | Likes 20 Dislikes 0

Heard this line before

7 years ago | Likes 42 Dislikes 0

It was in the post just above

7 years ago | Likes 2 Dislikes 0

Made that mistake...

7 years ago | Likes 2 Dislikes 1

Oil ain't wet

7 years ago | Likes 2 Dislikes 7

7 years ago | Likes 11 Dislikes 0

What happens if its dry though? (Serious question)

7 years ago | Likes 8 Dislikes 0

I too am curious

7 years ago | Likes 2 Dislikes 0

Then it becomes a drystone

7 years ago | Likes 5 Dislikes 0

Ayyyyyyyyyyy

7 years ago | Likes 3 Dislikes 0

*roll eyes gif*

7 years ago | Likes 5 Dislikes 0

The porous stone will become clogged with debris.

7 years ago | Likes 4 Dislikes 0

That wont happen if it has water in it though?

7 years ago | Likes 3 Dislikes 0

That’s the idea. If you keep it wet the debris won’t clog the pores.

7 years ago | Likes 1 Dislikes 0