How to use the Tumbler Diamond Rolling Knife Sharpener 

I’m furious that this is so simple, yet obviously effective.

Having declared my dissatisfaction with this sharpener last night ru-vid.comUgkxDcr-y2Pf6xdnrFHrSP7dl9kpKaCozcSQ I thought about the problem some more. It occurred to me that I might be undoing each attempt at achieving a sharp edge by the repeated attempts. So, I tried to clean up the unsatisfactory result by honing with only positions 3 and 4.Miracle!! A really nicely sharpened chef's knife, more than enough to handle my needs. Admittedly, it did not reach professionally sharpened razor-fineness, but it is now significantly sharper than it was. A bout of breaking down carrots convinced me. So, major apologies to the manufacturer, Amazon, and all happy and potential owners! Follow the directions: don't buy it if you have ceramic blades; and don't overwork your knife blade.

My Tumbler came in the mail today. It works great! For the first time in ages I have a kitchen-full of sharp knives and an empty drawer where all my old "sharpeners" used to live. 5 stars for the Tumbler.

I was just given this as a gift and I love it. What an amazing product!

I dig it!!

So a knife that has a full flat grind, just as an example because I believe this transfers to all knives, the angle won't be 15°/20° it will be less universally and vary between every knife depending on the width of the spine of the knife. The angle will be consistent to each particular knife but not consistent on a knife to knife basis unless the spine width of each knife is the same. The same applies to a knife without a full flat grind because the angle of the grind on the "sides" of knives vary between each knife even if it's a sabre grind type blade. Some sabre grind type blades are flat before the grind starts and then as long as the angle block part of the sharpener is flush with the flat part of the blade it could be as true to the angle as the block is. Most knives aren't like that though and a high end type kitchen knife usually has a full flat grind and therefore will not have the designated 15° or 20° edge once it has been sharpened. It will be slightly steeper.

I got mine yesterday and this thing is amazing. Love it.

I just got mine too! I also ordered the stropping pad. It really works so well--I spent the morning sharpening all my knives including a really large Serbian cleaver. I cut a whole chicken in half without any effort. Nicely packaged, really exceptional quality.

I saw the short and I immediately made my preorder! This is cool as hell

you are the first channel that turn knife sharpening into satisfaction

I’m a butcher for Winn Dixie and NEED a very sharp knife for big primal cuts. Will this work This video got him cutting a tomato. I need it to cut thru big chuck rst top round rst with ease

is it okay to get some scratches on the diamond end? I think the knife scratched it a bit

Just arrived after a very lengthy wait (originally Apr 17, today is May 4) after ordering on March 16th. It arrived via Canada Post, needed to pay $30 in import duties & taxes. It is easy to use, probably takes more than a few tries if the knife is dull. Tumbler did promise me "a complimentary German made knife as a thank you for your patience" but that did not come in the package as it arrived today. So not sure about their promises or guarantees just yet. Wouldn't mind the free knife so long as there aren't more duties and taxes upon receipt.

Stropping is an important part of the process but not enough is being shown about how to use it. Sometimes, it is ignored completely. I would appreciate an entire video dedicated to stropping, how it is done, and what is intended to be accomplished. Thanks.

I cannot find any reviews on these anywhere

I like mine. Yes there are other brands but mine works. Just make sure it’s kept at room temperature or else it will warp and won’t roll properly.

My upcoming adult life prolly gonna suck but at least i'll get to but cool stuff like this

Four sides to the block why not four angles?

Can you make another video explaining the science behind the two different sides. Like I get the idea of creating the burr but I thought the burr was removed when you started shaving the other side. Is it the honing that removed the burr you create?

Can you do the same demonstration but show the edge/sharpness of the tip of those curved blade chef's knives. I don't doubt your system will work on the main blade, but see most of these "systems" actually make the tip worse and dull and the first 1" or so on the blade is also important in several cutting techniques.

Just got mine in the mail. Haven’t used it yet. Hopefully it works as great as the videos say it does. My kitchen knifes are dull af.

Thanks

IT looks interesting does IT works on knifes that have really badly damaged blades? Like 3 milimetres chips in IT?

Good vid showing how it works, wouldn’t mind seeing some of the actual sound come through… is it supposed to sound like shrieking metal, chopping and grinding, a faint humming buzz? Lets us know how much pressure to use!

Do these work well for a knife maker who use high end steels? Ie high vanadium bearing steel/ 60hrc+

Specialty knife?

My Tumbler stiffened up and barely turns. I have to squeeze it to the counter with all my might. Can it be lubricated or loosened?

Perhaps this is a dumb question, but how can the holder possibly hold a knife in place while you grind its edge? I understand that it's a magnet, but I'm familiar with magnets and can't picture one being strong enough to secure a knife while you're sharpening it. Or.. does it take five minutes because you need to rub it softly? Is that the idea-- don't put much force on it so the magnet sticks?

Looks like the center piece rolls separate from the ends. Just learned that that’s how it is supposed to work, was wondering why it didn’t work very well. I have had mine for a few months now and to get the ends to roll separate from the middle takes a lot of force and makes it hard to sharpen. Anything that can be done to fix this like adding oil somewhere?

How do I want to order in Indonesia?

How would I know the difference between specialty or daily use knife? Thanks.

How to order I'm from Philippines?

How do you deal with larger blade? I have an ulu and there is no way this would work

If you hone the knife with the stainless steel disk do I still need to use the strop?

How do i sharpen a narrower knife blade that is shorter than the angle bock. For instance a paring knife or a boning/ filet knife.

i imagine you could make one of these pretty easy

How much pressure should be used to press against the blade?

wow, amazing

Would this work for sharpening a katana and or tanto?

I wish the magnet was stronger. I also find with mine that it seems to be really really stiff to roll… also the O Rings will leave marks on most counter tops that are a pain to clean. Maybe that’s just because mine is so stiff to roll you need so much downward pressure to stop it just sliding on the counter.

Dove lo posso comprare?

Thanks for this video, i got a similar product from china with 2 diamond discs and needed a video how to use it properly. this was great :)

So you use them dry? No water, or oil?

i finally got this but how do i know which side to use cus I do have some Japanese knives.....

Can you use this on a hawk bill knife?

Does it work on 1018 low carbon steel?

My roller is locked up and won’t roll, just the rubber parts roll along the discs on each edge. How can I fix that?

how do I take it apart to fix it since after only 3 months it no longer rolls smoothly

How can I get this but it can’t ship to Australia

This is an enquiry before i buy , i am a sword collector and i have a few that need sharpening , i don't have any machines ..for example i have a dull longsword and it has for edges in a dimond formation..would this be a good idea to buy or is this only reseved for knives

How do you determine which angle to use?

What is considered a “specialty knife” that would use the 15 degree?

What's a speciality knife?

Works great on larger knives but smaller knives that are smaller than the angle block keep sliding down and sharping stone won't work properly. Any advice on how to stop small knives slipping down.

Is this product your own development product?

What's the best way to sharpen taller blades, like a cleaver?

Can you sharpen a hawk bill with this?

Do these things work on axes?

What's the purpose of the hone?

What's considered a specialty knife

Где можно купить такую?

The ads for this knife sharpener are bs it said other knife sharpeners only keep the knife sharp for minutes

Onde comprar?

How we can get it

Good video but I wish they covered the stropping in the video as well

How can I made an order? What will be the cost?

bought subs

Wher can I buy this

When can I buy it in Korea?

Be easy to 3d print and add sand paper as the abrasive

i have smaller knives but no matter how much i do this they won't slice paper smoothly

doesn't really work with smaller knifes?

Cant find on Amazon

Send to italy pls?? I'm a chef I need it now

Can't buy for Australia well that sucks

Try and use this with a knife that is narrower than the stand……..good luck !

I ordered 3 months ago. Got a tracking number a month ago, USPS says they never received the package. Customer support has not been helpful. Pretty sure this is a scam.

Almost made it through the tomato without sawing.

Oi, what about the UK................................ I want one!

Wieso kann ich das in Deutschlang nicht kaufen?

Okay I can’t help but point out that there is a high risk of slipping if you don’t include like a silicone grip on the actual cylinder. Factor is just as important as form. Knock it off with the pushy marketing, and worry about refining your product first.

I bought one and I am very disappointed might work well with large kitchen knives with a wide blade. On my pocket knives it is useless.

Wl this work on a sword and how long wl it last

Mine doesn’t roll its stiff

It’s just not available in India?”

It's funny how terrible of a cut the guy did on the tomato. Seriously though this is tumblers official tutorial video too. 😂

How the hell are you supposed to know which angle to use ???

235$ price

i want to buy it so bad, but i live in Indonesia😥😥😥😥

Can I sharpen kukri with it? :P

Today I learned that the Tumbler knife sharpener is a kick-off of the Horl sharpener. I’m disappointed!

it's no good; safety issues abound. the blade is always pointed away, during sharpening.

very helpful. Next time make sure the guy's fingernails are clean. 1:26. Other than that; this product is awesome, and all other knife sharpers I tossed in garbage.

I feel like it’s still not sharp, send me on for free?

Lol. No. One side is primary bevel, Other side is secondary bevel.

👎👎👎👎Un mauvais imitation du vrai ( horl)

Or just get a Worksharp Precision Adjust and leave the gimmicks to the fools.

I'm pay.now just i waiting....i'm curiously

Fairly useless on narrow knifes

This is all fine and good, until you have to sharpen a 4” tall cleaver. It’s great for regular cutlery, but when it comes to old-fashioned-pro-grade, it’s worthless.