Why Ceramic Knives Are Almost IMPOSSIBLE to Sharpen!

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Why Ceramic Knives Are Almost IMPOSSIBLE to Sharpen
Ever try to sharpen a ceramic knife? In this video I discuss and show why ceramic knives are super difficult to sharpen on traditional knife sharpening stones.
How I sharpened my ceramic knife⬇️
amzn.to/2UQMD9t
Diamond compound I used ⬇️
www.knifepointgear.com
(my website)
3 micron and 1 micron
DMT diamond stones I used ⬇️
amzn.to/31U68zh
amzn.to/2SOFbsG
amzn.to/2SJcGNh
(these are probably the best beginner stones)
These are amazon affiliate links.
About⬇️
Hi, Im Alex, im a knife maker and RU-vidr, based out of southern Pennsylvania and my youtube channel is Outdoors55. This channel started as an outdoor backpacking channel, but quickly grew into a knife/ knife making channel. Everything I do on my channel is family friendly. I primarily focus on knife / knife making videos but occasionally throw in something different. Thank you for watching!😀
#knifesharpening #sharpening #ceramicknife
Knife Sharpening stuff I recommend ⬇️
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amzn.to/2ETD3rN
GREAT BEGINNER SHARPENING STONES For Mirror polish⬇️
(usa) amzn.to/2SOCy9r
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Cheaper stones I use all the time⬇️
amzn.to/2EPU2vh
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Folding knives I recommend
Best value for the money⬇️
amzn.to/2lTFEcX love this knife!
Favorite knife as of now⬇️
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Best cheap fixed blade⬇️
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other camera amzn.to/2CjteBP
Mic amzn.to/2CmZOmj
Other mic amzn.to/2ERSPUq
tripod I don't recommend but here it is anyway amzn.to/2COGboo
Action camera amzn.to/2JFoE5u
These are amazon affiliate links.
FULL DISCLOSURE
If you purchase from these links I get a small commission that goes towards supporting the channel. Thanks.
For entertainment only. I am not, and will not be held responsible for anyone re-enacting/ duplicating anything seen in these videos. Do so at your own risk. Do not duplicate anything seen in this video. Unless you are an adult responsible for your own decisions. Thanks
All my videos are copyrighted and not for sale or reupload. Unless you want to purchase them for $100,000 per video. In which case we can work something out.
Everything i say and do on this channel is protected free speech. I am simply exercising my 1st amendment right under the United States constitution. The supreme law of the land. I am exercising my right to protest. As well as my 4th and 5th amendment rights.

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Опубликовано:

13 фев 2020

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Комментарии : 3,2 тыс.

@OUTDOORS55 4 года назад

What I had to use to sharpen this knife⬇️😬 amzn.to/31Wep5K Watch video to find out why😉 Best strops and compound ⬇️ www.knifepointgear.com (My website) Stones I tried and failed with⬇️ amzn.to/2OW4U1j amzn.to/38EzgNu amzn.to/2UMRCrM (these are great beginner stones BTW) These are amazon affiliate links.

@raygun4468 4 года назад

I could probably get that sharp on my Hapstone V7 ... but what would be the point? I would never use ceramic over steel. Who uses's ceramic blades? Are you trying to get through a metal detector ...

@dr.greenthumb8895 4 года назад

You soud buy a same type knife, and sharp it whit its own matetial:-)

@jebowlin3879 4 года назад

would it be safe to say that the diamond stones are knapping the edge off of the ceramic? Microscopically

@Master...deBater 4 года назад

Excellent problem solving!!! I'd probably just treat it like an obsidian or flint knife. When the original edge becomes dull use a series of pressure flake removals to create a very sharp but serrated blade. And yes...just like any stone blade you will be eating stone micro-flakes. But we've been eating them for the past 3.5 million years. It's only been in the last few thousand that we've been eating steel burrs. Thanks for the video.

@oceanwaves83 4 года назад

The shape of the abrasive means a lot. While a 325 grit DMT works fine on my Maxamet pm2, the 320 grit diamond plate on my worksharp pocket sharpener instantly puts chips all along the blade. So it's certainly more than just grit rating.

@WildManFrizzell 4 года назад

We need to see more of that rock... I think it has potential.

@markcahoon2534 4 года назад

Yeah, serious peace of, I assume granite.

@billdickson871 4 года назад

@@markcahoon2534 looks like a granite surface plate

@markcahoon2534 4 года назад

@@billdickson871 I reckon thats what it is too, but I wouldn't call it a plate, it looks more like a big square block, but its still a surface plate, the only requirements are for it to be flat and hard.

@bruceswearingen7718 4 года назад

Custom scales available ?

@TM-wm7om 4 года назад

lmao yes, please.

@garrettord3304 4 года назад

As someone who has worked with ceramics manufacturers before (a competitor and slightly higher-end brand than the Kyocera knife shown here), i can tell you that Ceramics can't be sharpened because the material is porous. As you wear away material on the blade's edge, you're essentially revealing tiny internal bubbles which naturally become pits when exposed to the air. Those pits aren't big enough to feel with your fingers, but (as you explained around 9:00) they are big enough to catch rough edges of a diamond wetstone and cause bigger chips in the blade which is why it gets dull when you sharpen it. I'm surprised you were able to sharpen it at all. Manufacturers I'm familiar with don't even sharpen the blade when it's manufactured; instead they're molded and pressed into shape and that's it, which is why they're sharp but not usually good enough to shave with out-of-the-box. I'd love to see what you could do with a Dia-Titan titanium/ceramic hybrid knife, which have the edge retention of a ceramic blade, but a less porous and slightly softer material.

@perryrush6563 3 года назад

Well, I enjoyed your information. Thank you.

@matt25675 2 года назад

Where can I find more info on a titanium ceramic hybrid?

@OGRH 2 года назад

Apparently he doesn’t talk to people like you, he’s monetized!

@OGRH 2 года назад

And for that reason, I’m out!

@garrettord3304 2 года назад

@@matt25675 The company that makes them is called "Forever" - they're no longer operating in the USA. Not sure if you can find them outside of Japan.

@MajorCrisis 3 года назад

I've learned that if I want to sharpen a ceramic knife, I should give up and buy a steel knife.

@InkBleedsDeeper 2 года назад

but we all knew this! the ceramic industry trying its hardest to sell! ^_^

@Stettafire 2 месяца назад

Honestly? Yes. Even a relateively be inexpensive one (but never cheapo) will fullfil most common needs. I've got an eyewitness set, and they do everything I need. These ceramic (and those stupid coloured knives) are just a waste of money and the Earth's finite resources

@unlink1649 2 месяца назад

This is the way

@RitzStarr 2 месяца назад

ceramic knives are used SPECIFICALLY for leafy vegetables like lettuce. The metal wilts the leaf, ceramic doesn't. That's why they last basically forever. You never need to use it on something tough.

@mr.barber6602 4 года назад

"Impossible to sharpen"? kiwami japan would like to have a word with you.

@Gureenu 4 года назад

i was thinking the same thing when i saw the title

@unclekanethetiberiummain1994 4 года назад

He would just grind it into powder and make a new knife.

@dasty5228 4 года назад

He said almost tho 😂

@aaronryann1120 4 года назад

LMAO I was thinking that

@I.M.N.L 4 года назад

Adrian Vargas Kiwami Japan just uses stones tho.

@peoplez129 4 года назад

The geometry is completely different on a microscopic level. Ceramic erodes, while metal bends/rips. When a knife starts to go dull, it's generally because the very edge of the blade has curled over microscopically. So you end up cutting with the side of the edge, which is still small enough to be "sharp" enough to "cut". This is why running the knife along something like leather or metal, sharpens it. What it's really doing is folding that curled edge back over, trying to straighten it out. Ceramic on the other hand, does not deform like that, it just chips away until it is dull. You can sharpen a ceramic blade, but you need diamond grinders and you need to re-bevel the whole edge.

@cezarcatalin1406 4 года назад

C North Or you need rub it against superfluorinated polymers and slowly dissolve both sides in an uniform fashion until you get an edge.

@jessstuart7495 4 года назад

A honing steel only straitens the curled over edges. Once the edges flop over and are straightened a few times, they will become work hardened and will break away, leaving an irregular edge. Once you reach that point, a hone won't improve the cutting edge very much, and you need to use a stone to grind down the metal to a fresh edge.

@mikeriverajr4447 4 года назад

I love comments like these!!!!!

@Tha_AntiChrist 4 года назад

Kinda like how Indians made arrowheads back in the day they took a hard object and learned how to break sharp edges onto it. Take some hard steal and try the Knapp it into an arrow head it can’t be done. Haha

@mhazg6621 4 года назад

WHYY? Why does there a small particles of iron in my sharpening stone when i sharpen a blade??! Please answer dude.

@GR-cf4qh 2 года назад

I used to work in a sushi bar and I brought one of these in with a dull edge. The sushi chef was a serious knife guy and he attempted to sharpen it out of curiosity. He improved the edge from dull to meh and then decided it wasn’t worth bothering with.

@rollinrat4850 4 месяца назад

Serious Sushi chefs are crazy about their knives. My friend owns a sushi bar. If I even go near his knife he watches me like an eagle and warns me not to touch it. I'd never bother with knives other than steel ones. Knife making is a very old trade. My grandfather taught me how to sharpen various cutting tools and I'm a retired machinist. The first thing we did was learn chip formation and the making of various cutters in various materials. I've been sharpening knives for family and friends since I was a kid. When we visit people I often bring along my tools or take their knives home with me. The ladies treat me like a hero!

@neruneri 4 месяца назад

@@rollinrat4850 One of my best friends is a sushi chef too, and he'll bring out his knives for me to admire, but he will not let anybody else actually touch them.

@EllAntares 3 месяца назад

Most likely he managed to get it to "alternate sharpness", where instead of looking like A it looks like П. Yeah, knives made of hard material can cut some stuff while having a flat edge

@rollinrat4850 3 месяца назад

@@EllAntares Certain cutting tool edges intended for metals are barely acute.

@unlink1649 2 месяца назад

Ceramic knives are cheap consumables. And they are ugly

@itsSmiv 3 года назад

4:38 "it feels like chips" *literally feels some chips* I had to give the video a like after that.

@dynnzainal1990 2 года назад

Same

@matthewadler1329 2 года назад

Great craftsman, and actually funny.

@pikkukurreable 4 года назад

RU-vid: Hey wanna see a man sharpen a knife using terminology and techniques that you don't even understand because you have no idea how sharpening works? Me: Um yes please

@The_Punisher_969 4 года назад

Underrated comment

@bioemiliano 4 года назад

It's not rocket science, you grab the thing, and make it thinner in a point so the force is concentrated.

@davidlee8843 4 года назад

I had a phone made by this company

@asandax6 3 года назад

@@bioemiliano Force is a Physics term so you are now talking about science

@shadowknight7584 3 года назад

King Henrik NYR welcome to RU-vid recommended

@wondosea3825 3 года назад

Me: browsing RU-vid at 3am RU-vid recommendations: hey wanna see some guy try to sharpen ceramic knives? Me: why not

@driftkinggames4694 3 года назад

Same

@katiesdead1309 3 года назад

Me rn 😅

@GradualReportSerbia 3 года назад

4.30

@coelho_plays2530 3 года назад

2:00 :)

@kamilrichert8446 3 года назад

same

@briansharp4388 Год назад

Was a ceramics machinist. Use a resin bond diamond grinding wheel and coolant. Sharpen right up.

@robertmarazzato5289 2 года назад

Kyocera sells a battery powered diamond wheel sharpener specifically for their ceramic knives. I have sharpened quite a few knives successfully with it very easily. It seems to only work with their brand knives as you need a lot of blade or the plastic handle prevents you from making contact with the grinding wheels. Never shaving sharp though - but a perfect working edge for soft foods like tomatoes.

@dainan4875 4 года назад

Eminem aint even quit, he just beasting on some knives

@rogueanuerz 4 года назад

diss that knive down

@giggityeffyou 4 года назад

Gotta have them sharp knives when you cut your meatballs in mom's spaghetti

@aerobyrdable 4 года назад

Knees weak arms are heavy, the ceramic's goin dull already. Paper's confetti.

@Sypaka 3 месяца назад

"This looks like a blade for me, so everybody, just sharp with me, i'll strop this blade into controversy, because it's feels so dull without me." - Eminem of Universe 2661 (Jason version)

@blwngt1598 4 года назад

5:08 Never have more true words been spoken! "It will cut you..... if you cut yourself." You must be the patron saint of sharpening.

@johnhanley9946 4 года назад

Lol!

@Buffwheel1 4 года назад

I think it was Confucius.

@souptimelost9611 4 года назад

Reminds me of "people die when they are killed".

@Stettafire 2 месяца назад

"We are really weak against stronger people"

@Nuovoswiss 3 года назад

You can sharpen ceramic with a common/cheap carbide or diamond stone, the key is that you only sharpen "rearward". IE, the edge should always be at the behind the direction of motion. The chipping you got was what happens when you push the edge into the abrasive, so a standard forward-and-backward motion is terrible for ceramic.

@MismanagedFutures Год назад

Exactly, this whole video is all wrong. The reason he couldn’t sharpen with the stone is because he was pushing towards the stone creating chips. And with the wheel he was effectively pulling, so nothing to do with the grit. I have been sharpening the black kyocera knives that are a lot harder than the white ones without issues.

@em4703 11 месяцев назад

@@MismanagedFutures Yep. There's also "elastic ceramic", or more precisely HIC (High Impact Ceramic), that flexes and doesn't chip even when cutting bone or harder materials. Sadly only one single company has access and the ability to make knives out of it, Rahven knives. Luckily they're cheap as the design is kept very minimalistic for this exact purpose, but they ship straight from Switzerland so if you live in the americas or asia it can be a bit pricier and slow.

@jegowysokoscjankowalski 3 месяца назад

@@em4703that company made a knife for Spyderco. I think it's called Mule MT40.

@dougware3629 Год назад

Oh my gosh! ... "Stand back. I have Damascus!" That is the greatest line. I'm totally stealing this. :)

@0r1x 4 года назад

Metals have a crystaline molecular structure, making sharpening easier as each molecule removed will find the edge of the next molecule. Ceramic has a granular structure, like sand or clay. It tends to clump hence the 'microchipping'

@h........................... 3 года назад

THIS IS BIG BRAIN TIME,MY FRIENDS!

@jolves4432 3 года назад

NOW YOU PEASENTS ! PRAISE THE LORD OF THE SHARPENING KINGDOM !

@Abdega 3 года назад

That granularity is due to it being made through sintering, as opposed to the metal that was probably melted at some point during refinement It’s kinda like if you put crushed ice in a cup and water in another cup and then stuck them both in a freezer

@Karl_Kampfwagen 3 года назад

Not even, bro. Metals have a flexible matrix, but Crystals have precisely fixed crystalline matrix forms. The angles of the Faces HAVE TO be precise and match the materials natural face angle formation to avoid chipping

@0r1x 3 года назад

@@jolves4432 I had no idea how seriously people take sharpening before I posted this. I now cower in fear over ever mentioning anything sharp without a PhD in stropping.

@jtbwilliams 4 года назад

They're good for people who never sharpen their knives and that's it, because they stay sharper for longer and break before they're completely blunt.

@Mic_Glow 4 года назад

So for rich people? 20$ knife and a 50 cent sharpening stone will last for so long the handle will break or the user will die before the thing is used up.

@MaethorDerien 4 года назад

@@Mic_Glow You would be surprised how many people will just throw their knives away after a year or two and buy new ones because they never hone or sharpen them. In fact most people do just that so of course they would rather spend 20 dollars on a ceramic knife that might last them 5 years vs something they will throw out in a year or two.

@gold9994 4 года назад

@@MaethorDerien welp, i sharpen my knife every 2 weeks. Not all though, since it'll be too long

@claudeyaz 4 года назад

@@Mic_Glow lots of people have bad hands. Or disabilities. So sharpening a knife isn't feasible. Ceramic knives are great for them

@xTr4c3d 4 года назад

I don't own a stone. I bought one of the swappable blade razor knifes. Mine came with 5 blades and the original is still sharp enough for cutting strapping and boxes at work 5 months later.

@user-lw2ie5wj9t 4 месяца назад

I just had an opportunity to sharpen a ceramic knife, which was chipped pretty bad. Your video has been the only truthful video out there. Thank you for coming up with the disk idea because I’m going to try that. I’ve been sharpening now since I’ve been 12 years old I’m 62. This is a true challenge of my talents. Thank you so much.

@oldman6495 2 года назад

Is running with a ceramic knife, safer than running with a high carbon steel knife? My mind boggles.

@MeepMeep88 4 года назад

What about that one asian dude who turns random things into knives.. LIke feathers and stuff lol

@Nevir202 4 года назад

Just watched his “World’s sharpest chocolate knife” video earlier. 🤣

@knifelife7777 4 года назад

That guy is crazy ! He has to put DAYS into some of those videos. Good stuff.

@mud4309 4 года назад

We're talking about normal humans. The creator of this video is a normal human. That Asian guy is a god of creation, it's not a fair comparison.

@RahulSharma-nv2fq 4 года назад

Candi Soda oooo yea

@Ninjacob123 4 года назад

kiwami japan is my religion

@dilan2097 4 года назад

This was the most emotional anime I have ever seen. 12/10. Really recommend

@sadnut9513 4 года назад

This...this is the comment ive been looking for.

@user-dw2yp6jl8s 4 года назад

At the end of the video a commercial was a japanese music video.😂 I'm taking it for the ending. (due to vpn connection to internet through Japan)

@KuroNekoAaaaa 4 года назад

UwU

@robertstewart2906 3 года назад

I saw a video on Kyocera ceramic knives. In it they showed a very high-tech manufacturing process and the way the clay is selected, etc. I was surprised to see that they sent all the new knives out to a small home based sharpening guy. Kyocera offers "free" lifetime sharpening with a $20 "handling and shipping" fee. The re-sharpening service was shown. A guy takes them out of the return boxes and immediately puts a new edge on them by hand on a high-speed, flat spinning diamond disk. I have re-sharpened my ceramic knives using the WorkSharp machine. First I use a diamond belt offered as a "ceramic sharpening belt". The edge is polished using a strop belt.

@maxtroy 3 месяца назад

WHy is this comment not at the top?! It's the answer. lol.

@matthewadler1329 2 года назад

I've been wondering about this for years. I didn't obsessively pour through all of the information available on the web, but I did dig a bit, and came up empty-handed. Thanks a lot for doing this with such tenacity. I have a lot of respect for your abilities, and I love your videos. I would love to see an edge retention video for ceramic. Thanks again

@Wasamatau Год назад

Pore

@em4703 11 месяцев назад

His information is outdated, elastic ceramic/high impact ceramic is a thing now. It's not easily available, but its flexible, it outcuts any steel and its resistant to chipping/cracking. It's definitely still ceramic and after a point of stress it will fail, but it can be sharpened on diamonds. Rahven for example is one maker.

@omarvelasquez8961 4 года назад

Dude I'm not even into knifes or nothing but the montage of him building a thing to sharpen the blade made me laugh out loud , I'm definitely subscribing

@ryantant374 4 года назад

U made me laugh like “I’m not even into knifes” lmao 😂

@tigerisak9037 3 года назад

I dislike ur comment by mistake so here take a free like

@xokevin2143 3 года назад

This editing is still top notch. Feels like a movie featuring the rock

@brbapappa 3 года назад

Blade

@jannikheidemann3805 3 года назад

Well it actually does feature an genuine rock.

@extract8058 3 месяца назад

Nah the rock sux this guy is much better

@Fr0s1Byte 3 года назад

Your humor is top notch, rock and chips bits had me rolling

@ChadMc74 2 года назад

really appreciate how you stayed the course and thought through the problem

@JUSTanotHERndevr 4 года назад

“It feels like chips” *pours out and touches chips for comparison*

@CM-xr9oq 4 года назад

you're sharp

@Nayde 4 года назад

Yeah, i thought he would just show it. He even touch the chips and im like what the hell.

@Corzappy 4 года назад

I instantly cringed when he ran his finger down the blade. Nomatter how dull that was just an instant red alert in my mind.

@zadesirius 4 года назад

kiwami : turn potato into the sharpest knife

@CaptainSeamus 4 года назад

and a minute or 2 later, "What"

@HELL5ON 4 года назад

“It’s feels like chips” Proceeds to slow-mo chips falling then you touch them. Take your sub and like.

@kareemelbrashy1478 3 года назад

First reply

@dogswithhorns 3 года назад

And no longer the only

@mmercier0921 3 года назад

Maybe finding out how the manufacturer does it... probably proprietary information. I knew a guy who could make transparent ruby glass. He died with his secret. Never even told his wife where the full specifics were. Every employee compartment separated from the others. Nobody figured it out because the specific process was never written down... it was only in his head. Think he did some lenses out of quartz or borosilicates or something for satellites to pay the bills. Guy just made crystals for fun. He liked Guinness stouts.

@bara2ban 3 года назад

Like one of the comments mentioned that ceramic cracks and chips with sudden temperature change, like a dry sharpening. That's why ceramic tile installers cut their tiles with liquid cooling. Even a paste is not liquid enough to cool it down. I would suggest to dilute the diamond paste with some liquid, perhaps even water, and use as a liquid coolant and abrasion at the same time targeting the edge. Also for the spinning wheel surface I would use some sort of leather hide that is not too soft.

@dddddd211 3 года назад

I really like that the 12 minutes of your time is all content and no prolonging shit everyone else is doing... Keep up the good work man!

@lodin56 4 года назад

When i was little (ten years ago), my father brought us a ceramic knife from japan. The knife is still sharp, not as sharp as it used to, but still decent edge. Ceramic knives are made mainly to cut vegetables, not harder things eg. bread. It also depends on the quality od the ceramic knife you buy. As i've said a good ceramic knife used properly can last you a decade and more.

@NightMind0 3 года назад

This

@StUtter-so8ju 3 года назад

What kind of bread are you eating that is harder than a carrot?

@serdarsdnc 3 года назад

@@StUtter-so8ju i think he meant it as in harder to cut

@yomumma7803 3 года назад

@@serdarsdnc i think you underestimate the difficulty of cutting carrots

@yomumma7803 3 года назад

@Lallungmuana Chenkual nah, just squeeze them on the front and back, and use long strokes

@red6743 4 года назад

Everytime he said DMT, Joe Rogan's neck hair tingled.

@jackmills5071 4 года назад

First time I saw one of those stones in the hardware store I did a double take

@metamorphicorder 4 года назад

This deserves more likes

@falerving2588 4 года назад

Its ringing

@xyoungdipsetx 4 года назад

RE D lol

@transkryption 4 года назад

i smoked one of those stones. coughed? now have silicosis? maybe in didn't do it right... wasn't as good as Joe Rogan claims.... 1 &1/2 stars 🌟

@alext8828 Год назад

The 1-micron stropping wheel is still moving stone particles out of the edge of the blade. This is because the blade is perpendicular to the travel of the wheel. Reduce the angle and the surrounding stone should support the edge more effectively. Arrange this so the wheel is almost parallel to the knife edge.

@burtreynolds3143 4 месяца назад

one of the two smartest comments on here.

@Chepecafeteria 3 года назад

Finally you got it. To paint a better picture I will use an extreme example. Sharpening ceramic is like trying sharpening glass. It is bridle

@locksmithmuggle 4 года назад

"Feels like chips" Proceeds to touch chips. You sir have earned yourself a like and sub

@KT-cz7rm 4 года назад

Ditto

@liljuanito123 3 года назад

My favorite part was him feeling the potato chips in slow motion.

@Skonkgasm 2 года назад

yeah that was pretty intense

@anthonyrogerson6863 3 года назад

I keep getting recommended older videos and get exited because I think you're back

@pomeroythomas 2 месяца назад

Fucking LOL at the safety flip just when I was thinking 'oh god he's running with it'. Absolutely masterful.

@mahmadoable 3 года назад

As a dentist I've never sharpened a knife. But I work with ceramics every day in my opinion sharpening ceramic knives is similar to polishing ceramics in order. We begin with large grit diamond to lowest grit diamond burs. Then we switch to carborandum with rubber mixture burs beginning with higher carborandum ratio, ending with pure rubber bur. This recipe will give a glass glossy finish without the need for glazing. But be aware of over heating the ceramic as it will chip and crack , continuous irrigation and water cooling is needed. If you follow the order I'm sure you will have a razor blade sharp knife.

@mahmadoable 3 года назад

FYI all metals aren't able to cut ceramic. carbide, stainless will roll over ceramic and will leave marks as the will wear out against ceramic.

@mahmadoable 3 года назад

taking about hardness stainless steel is about 215 mpa whereas ceramics vary from 120 to 950 mpa with a thickness of a knife let's say 3mm ceramic hardness should be between 300 to 900 to withstand lateral forces, otherwise it will be breakable by hand. I think that this knife is made of zirconia which is a 800 to 950 mpa. that's why it's so hard to be sharpened.

@y2ksw1 3 года назад

Interesting. It somewhat meets my suspicion.

@billybobwombat2231 3 года назад

As a dental sharpener trained in factory H/F , I would concur , I personally use mechanical systems to sharpen ceramic knives, diamond belts and diamond wheels 🤙🦘

@chemistt 3 года назад

As a dude sharpening ceramic knifes periodically I can tell you that you are right. I am sharpening my ceramic knifes with special diamond 2 step mixture for raw sharpening and fine sharpening. (Its a sharpening tool by TESCOMA brand) I never finished them with rubber as you mentioned but I dont need my knifes glossy.

@SurGhostly 4 года назад

I physically cringed when you slid your finger across the blade

@RosarioHawks 4 года назад

You can only physically cringe lol. Edit: you can mentally cringe but physically cringing is just cringing.

@basian7365 3 года назад

tbh... ive cut myself on many things: paper, cardboard, glass, iron nails, toenails, even bread (dont ask me how... even i don't know how i managed that XD). but i never managed to cut myself on a knife. i have a butcher knife, a japanese chef knife (and dang they are sharp af!!!), a bowie knife,... not a single cut... not even a scratch... even when the tip of my chef knife balances on my finger, not even a mark...

@SurGhostly 3 года назад

Basian I’ve only ever gotten one tiny cut and that was from me putting my fixed blade back in its sheath... and bread I get it if it was toast but bread

@basian7365 3 года назад

@@SurGhostly it was probably angry cause i ate its parents XD

@TechSupportDave 3 года назад

@@basian7365 i actually almost cut myself on bread. i did it while trying to grind down some dry bread.

@FronbondiSkegs 3 года назад

Great video - answered all my questions I ever had about ceramic knives.

@mohawksniper79 3 года назад

I know from making arrow heads from big ceramic pieces and Flint napping them makes them really sharp but it leaves a jagged Edge because you have to go back and forth on each side.

@josiahcarter9639 3 года назад

music changes everything, I felt like i was watching someone overcome the most difficult tribulation in his life! Loving this channel keep it up man!

@gregdaweson4657 3 года назад

Y know the song

@darshankumardave7485 4 года назад

Edge leading passes are not recommended for ceramic knives. Edge leading passes will almost always will cause chipping. Edge trailing passes may help but only your trial could tell us how much.

@neilreid2298 3 года назад

I have a ceramic knife similar to yours. It pretty much sits unused in the drawer. Excellent tutorial on ceramic knife edges and how to (sort of) sharpen them. Thank you!

@allenshepard7992 3 года назад

Thank you. Perseverance pays off. I learned a lot so thank you.

@Wavianite 4 года назад

you look like LinusTechTips but with knives

@brawndo8726 4 года назад

6:12 "Everyone knows you run faster with a knife" - FPS Doug

@cedddkkddkk 4 года назад

Mike Taylor I too am Canadian, so i get this reference.

@jonny555ive 3 года назад

And a new pair of shoes 🔥

@drakehatter7225 3 года назад

The main thing i like watching alex for is his comedic relief. It's great lol

@cosmingurau 3 года назад

Ceramic knives are good for fruits and vegetables, when cutting on a soft cutting board, or even better - without any cutting board. When used that way, and that way only (NEVER use them in contact with something like a PLATE) they will keep sharp for many years, with no need for sharpening. It's the only advantage they have.

@cassiemunga1 2 года назад

Thanks for the comment. The one that I used on a regular plate to cut food became dull but the other used only on cutting board is still sharp.

@18wheeler77 4 года назад

In the words of the great poet Will, from Alec Steele, and I quote, “There is no life, there is only sanding.”

@MrHipeople111 4 года назад

"Hows the hand sanding going Will?"

@18wheeler77 4 года назад

aaron marriott silence 😂

@FlaminChicken231 4 года назад

*only HAND sanding

@18wheeler77 4 года назад

Flamin Chicken my bad

@ls901 4 года назад

Crap. I'm close to collapse from laughing.

@willyam9735 3 года назад

I tried to do some of the things you did here to resharpen a ceramic knife but to no avail. I then got an idea one day and tried flaking the edge like a stone knife. It came out pretty good but it now was no longer a smooth continous edge but more like a bread knife. It no longer could cut thin paper in strips but did pretty good on most meat and vegetables. The notches I took out of the edge were maybe .5mm so not that deep but it worked. I'm satisfied with the results as the knife only cost $8 at Harbor Freight in the first place. If it no longer is able to cut again I feel I could get at least 5 more reshapes before giving up on it for good. I used a awl sharpened to a fairly sharp point to do the work on it. My whole reasoning here was, what have I got to lose by trying it and the answer was .....nothing!

@firstlast2514 3 года назад

Hahahaha I laughed so loud when you "cut" the paper with a rock 😂

@robertthompsonii6657 3 года назад

So I have watched hours of your channel and finally came to this one! By far the best editing and scenes I’ve seen so far! So funny and entertaining! Lol! Great work!

@pmmp855 4 года назад

Wait a minute, what’s a phone book?!

@bradleyburdett5361 3 года назад

You use them with your rotary phone

@cliffdawg9800 3 года назад

Bradley Burdett o - o

@cliffdawg9800 3 года назад

Bradley Burdett it’s called sarcasm

@isatntt 3 года назад

my grandpa wanted to use one cause he needed propane, i ended up just looking it up on google

@ShadowYeeter 3 года назад

a book to hit people

@Rooster1172T 3 года назад

4:51 "dmt stone" Joe rogans ears peaked and his pupils dilated.. haha

@eregon5152 3 года назад

Jamie, pull that over

@Patte104 3 месяца назад

I have never had problems polishing ceramic blades, I use the same equipment that is used for smoothing diamonds. Works well

@ValerieCudnik Год назад

Thanks for the explanation. I picked up a couple of ceramic knives today and will just toss them when they get dull, or use them in the garden.

@thumpke 4 года назад

Never was a fan of ceramic knives and here you prove me right! That’s Alex hahaha

@daryooshfatemi 4 года назад

Timo Savelkouls bet it beats Gerber

@E620SE 4 года назад

I like them in the kitchen

@Emanemoston 4 года назад

If I remember correctly, you can send those knives back to Kyocera, they will sharpen them for free, just cover shipping.

@huntforandrew 4 года назад

From the Kyocera website "Sharpening fees: USD $12.00/1st knife + $7.00/each additional knife. Shipping and handling: USD $9.00 flat fee"

@inthebriarpatch 4 года назад

Clarence has been mailing in his ceramic knives and they've been sending them back to him without touching 'em! 😂🤣

@cookieshousecannabisco6963 4 года назад

@@rockyrocker23 I do and they send the same one back. I need ceramic knifes because ceramic knifes are not porous vectors for disease and infection.

@tomsoki5738 4 года назад

Cookie's House Cannabis Co you could just, you know, wash them?

@victortitov1740 3 года назад

@@cookieshousecannabisco6963 i'm afraid you have it precisely backwards. Ceramics are usually made by sintering, which is applying pressure to a powder under high temperature, which causes the grains to fuse together. This is a great way to make a porous solid. Metals are usually molten, and melting usually makes for a very solid, unporous result (there are exceptions, cast iron for example). I'm not saying that ceramic knives suffer from porosity - probably they don't, but metal knives aren't porous either.

@ydnah2 3 года назад

You made my day. Good video post and it takes lots of work to make to this quality. Well done. I find it informative and entertaining. Each tool has its edge and ceramic knife is just not for all season type of usage. For fruit and vegetables cutting are just perfect and prevent from browning.

@DeuxisWasTaken 2 месяца назад

That makes sense. It's so hard and brittle, that when you manage to apply enough force to break off any material, it finds a fault further in and breaks off more. With finer dust it's ground more uniformly on micro-scale, which better distributes the forces over the blade and makes it harder to break on a fault due to uneven load, but you can't stop micro-chipping completely since the core issue remains. Thanks, I've always wondered why ceramic knives are considered to be impossible to sharpen.

@johndifrancisco3642 4 года назад

I drop almost everything, especially washing the dishes. I'll never own one. Thank you for another reason.

@miker5502 4 года назад

Hi Alex .. Tried sharpening a ceramic with my diamond plate a few years ago and could not get it to apex. They are very, very brittle. Dropped one, a Boker pocket folder on a ceramic tile floor and voila! It broke into three pieces aaahhhh. Bought a few kitchen ones, cheaper than the Boker , more or less to experiment as you did and finally threw in the towel. Your a better man than me to keep going , but you did have some success. I was told that the Japanese company Kyocera ( whom I believe was the developer / manufacturer of the ceramic tiles on the Space Shuttle, pioneered this technology. They apparently tried and more or less succeeded in making a razor, (not sure if it was a DE blade or Straight Razor ) that was actually much too sharp to shave with, it was apparently so fine it would just flay the skin off your face. Ouch! Great 👍 video! P.S. just a thought, you might want to wear eye protection while sharpening a ceramic on the power bench grinder. If it should shatter ooooh that would be bad news.

@caswallonandflur692 4 года назад

Always ! Eyes are important . Two are better than one ! Yup

@buggsy5 4 года назад

I don't think a wheel grinder would work - too much variation in wheel diameter - which varies the angle of the stone to the edge. A flat lapping disk would be better, but a person would have to rig something to hold the knife. I have various ones I use for gemstone faceting, but am not interested in doing such experimentation.

@NickCombs Месяц назад

Thanks! I might get some of that 1 micron paste because I do like the feel of ceramic kitchen knives, and comfort = safety. I don't think the micro-chipping should be any more of a concern than material that wears off of steel knives.

@Brandon-ob8ul 4 года назад

Get one of those cheap usb microscopes from Amazon

@eltiobry3859 4 года назад

This is a great idea, i would like to see that in future videos

@eduarditogonzales4485 4 года назад

When a ceramic (zirconia) knife goes very dull, I pass a couple of times a flexible fine diamond disc with a dental handpiece , at about 20 000 rpm, after that a felt disc with some polishing compound... I never tried it on paper but my wife was happy with the results...

@philchia4764 4 года назад

Not a lot of people have access to a high speed turbine head

@dranoelr 4 года назад

@@philchia4764 But a Dremel should be possible to get for almost everybody. They do the 20k revs easily.

@philchia4764 4 года назад

@@dranoelr dental high-speed Handpieces get to 800,000, with most at 400k. "Slow speed" is 40k.

@eduarditogonzales4485 3 года назад

My point is to be a flexible disc to don't chip the edge...Dremel will do it, don't need amazing RPM

@johnridgeway6718 2 года назад

Best advice I've seen so far on ceramic.

@Namugaseum 10 дней назад

I cackled more than I’d like to admit at the chips bit. 😂

@RedBeardOps 4 года назад

I'm pretty impressed really... considering the comment section generally says you're the worst sharpener on earth. 😉 - This is by far your best "epic-video-victory- montage" to date!

@OUTDOORS55 4 года назад

Haha thanks brother 👍👊

@khakicampbell6640 4 года назад

Oh man, that come-back montage was great! The music was so compelling and victorious, I could just feel the determination! lol. Very funny. Thanks for the great research.👍 Glad I don't have to do it now! 😂

@Pro_fess0r 3 года назад

You're amazing bro!! I almost cried😭. Never give up!

@randyortonsdickbulge 3 года назад

That’s exactly how I thought you’d sharpen it too that’s great glad you figured it out I was shown that was of sharpening by my wood shop teacher

@christophersmith8014 4 года назад

I'm glad you figured it out. I agree about the "where do the chips go?" micro shards of ceramic in your intestines probably. At least they should get entangled with some fiber and pass through instead of punching holes. Ceramic isn't ductile like steel so the sharpening techniques that rely on drawing out metal don't work.

@voodoo7008 3 года назад

In the mechanical seal business, hard faces were tungsten carbide, silicon carbide, and ceramic. We only used diamond paste to lap the seal faces.

@FaithThruGraceinChristAlone 3 месяца назад

As someone who works with ceramics, it makes sense that you need a tiny grit. Clay platelets are 1/256 of a mm. You are dealing with super small pieces, hence the chipping. Very impressed you were able to sharpen it! Always wondered if it was possible myself.

@BigDH28 3 года назад

The slow mo part of you running with the knife up, then the face, and the turning over was priceless! 🤣😂 Had me rolling! Lol earned my sub 100%! 👌👍✊

@nox_chan 4 года назад

come for the knowledge stay for the production quality

@denniswhite166 4 года назад

Me too, AND the humor.

@nox_chan 4 года назад

@@denniswhite166 5:47

@rafaelmoral8053 4 года назад

The editing, effects, fun parts and the content you put in to your videos make your channel unique. Congrats and keep on.

@MatthewBondarchuk 4 месяца назад

Thanks for the advice 😃

@ventsolaire Год назад

Thanks for the heads up.

@bayufadhilla8685 3 года назад

Impossible to sharpen? *Edge of glory has entered the chat*

@aidan4028 4 года назад

great production homie, it’s easy to tell that you put thought and care into your videos. as a fan and consumer of knives i’m butthurt that it has taken me this long to find your channel

@britcat7780 10 месяцев назад

Very interesting. Love the tenacity. Relentlessness is an essential factor for success facing tough problems 🙂

@CrackerFL 2 месяца назад

Your videos are soo very well done! Great photography, and tell a story well!

@privatecitizen5264 4 года назад

I use a ceramic knife in a professional environment, and some days it gets more use than any of my other steel knives. It's best used for delicate herbs, tomatoes and other easy to bruise fruits and vegetables. The one I currently use, I've had for 4 years and only had sharpened once. When it needs sharpening, I take it (along with the rest of my kit) to a professional who uses a belt grinder setup and gets them all to a razor fine edge, including the ceramic. They simply hold their edge because there really isn't anything that wears it down through regular use.

@amaliosaenz23 3 года назад

I came from DBK lol I was watching their knife vids and saw this in recommend you sir have gained a sub!

@kosmati4569 2 месяца назад

Loved the slow chips caressing shot.

@conifergreen2 2 месяца назад

I have an older Japanese steel knife, A Northcraft 700 that I bought in the eighties. A cheap knife. I spent years trying to sharpen it. I finally was able to get somewhat of an edge on it with a small belt sander!

@01Tubee 4 года назад

Great observation on the “micro-chipping”. I believe it is fairly easy to guess where the chips go. Very good and honest review! Thank you and keep up the good work. I not only enjoy your videos, but I learn a lot as well. Be blessed!

@johnshepherd9849 4 года назад

Dude, hilarious. And informative. Loved it.

@bobcarrender2693 3 года назад

Always informative & entertaining... Love your style... Thank you...

@DailyDoseOfRandomLogic 2 года назад

I never thought a video of sharpening a knife could be so interesting.

@L1Run 3 года назад

"Where do chips go?" "Well, uh... They... Hmm... Ok I'm going with steel knives."

@rolandlee6898 3 года назад

Where do you think the steel goes as it wears away?

@L1Run 3 года назад

@@rolandlee6898 Steel knife edges don't dull because they chip off, they dull because they curve in. The sharpener is what wears them away. So where do they go when they wear away? Not into the food.

@rolandlee6898 3 года назад

@@L1Run Depends on the steel whether it will chip or roll. Any steel will abrade with use, this includes cutting food, not just sharpening. And yes, it will go into the food. And its not a health hazard in either case. And youre not supposed to sharpen rolled edges from normal use on a kitchen knife. Thats why you hone the knife, not sharpen it. A properly maintained steel knife doesnt need any sharpening for as long as a ceramic one would last. As you demonstrate - people dont know how to take care of their tools, thats why ceramic knives were invented - they dont need maintenance.

@L1Run 3 года назад

@@rolandlee6898 I never said anything about correct knife maintenance techniques, I said that a sharpener is what wears the knife down. I'm glad you googled all of that, but I was only addressing your question, since it was evident that you didn't quite know how steel knife wear works. A properly used well made steel knife does not chip into your food. As for "all steel will abrade with use," that means very little. Everything abrades with use - the question is how exactly it does it, and over what period of time.

@rolandlee6898 3 года назад

@@L1Run Tell me about googling, kid... I never said a good knife chips into your food. Learn to read properly, ok? Might help you not embarrass yourself in the future.

@J3RK115 4 года назад

I agree that they're difficult to sharpen but I use a standard diamond rod most kitchen knife sets come with. I use ceramic knives mainly because they stay sharp for a good while if properly cared for, and because they don't have any "bite" or whatever the term is (the reason why it would hardly shave your arm). Really good for vegetables, fruits, and any boneless meat since it'll glide right through without sticking. Plus they're cheap (I use a $3 one I found at Walmart). It's really up to preference but you're much more skilled in knife work and such so I advise everyone who reads this to take his advice much more seriously than my own

@Sebastian-ed5kt 4 года назад

How long is a "good while"? Just for reference

@J3RK115 4 года назад

@@Sebastian-ed5kt not really sure. The original one I got for like $6-$7 is still cutting through veggies and meat like floss through cake. I also got a 5 piece set from Amazon for $20 with a peeler and 4 knives in various sizes. If you're not an aggressive chopper then I can recommend ceramics enough

@Sebastian-ed5kt 4 года назад

I don't need a new knife, I have my knife out of 1.2519 (61hrc) which only needed sharpening once in the last two years because I dropped it😂😂 Just wanted to know if they stay sharp longer than my knife

@J3RK115 4 года назад

@@MrSuseguru the one I get has diamond. If they don't come with it then I just get another one

@J3RK115 4 года назад

@@Sebastian-ed5kt whatever works for you lol. They both have their pros and cons. I usually recommend ceramics to people mainly for the price and low maintenance

@patientestant 3 месяца назад

Good insight into why it is so hard to sharpen ceramic knives. The edge chips. I think it is both as you mention that the diamonds could be fracturing the edge, but also that the pressure of the edge on the stone creates enough bending that the edge breaks off.