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Ultrasonic Chef's Knife

seattleultrasonics.com

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Re: Ultrasonic Chef's Knife

#621

Post by dotancohen »

czl wrote: post #603
Zigurd wrote: post #592

Earlier quoted context omitted.

I use one of these: https://www.ikea.com/us/en/p/skaerande-knife-sharpener-black... It's cheaper than an electric sharpener and doesn't carry the risk of taking off too much material from a blade due to overenthusiastic use. I am 100% certain that there are multiple people on this thread that could tell me I'm getting less optimal results than their tools and/or method. I don't care. I'm getting results that work whe…

Pull through sharpening creates an edge that does not last. This channel has great explanations about this and what to do instead: https://youtu.be/pagPuiuA9cY

That is an amazing video. I can confirm that the methods are correct, he mentions exactly what I've been doing for years, explains and demonstrates very clearly.

Re: Ultrasonic Chef's Knife

#622

Post by rkomorn »

TulliusCicero wrote: post #620
Taek wrote: post #243

I'm a bit surprised to see how much snark there is in the comment sections of this video. The requests for "let's see an independent chef use this knife to do real kitchen work" make total sense, but the moralizing around e-waste and losing fingers etc feels off balance. People spend hundreds of dollars and many hours sharpening kitchen knives, of course there's a viable market for sharper kitchen knives. And for e-w…

> I'm a bit surprised to see how much snark there is in the comment sections of this video. It's "slashdot talks about the iPod announcement" all over again. Unfortunately, communities tend to devolve other time into empty cynicism and negativity, and it's hard to stop, since obviously you don't want to ban 100% of cynical or negative comments.

> since obviously you don't want to ban 100% of cynical or negative comments.

Probably would be a net positive if we did.

Re: Ultrasonic Chef's Knife

#623

Post by thfuran »

blincoln wrote: post #557
john_minsk wrote: post #373

Earlier quoted context omitted.

Interesting idea, but I would say that it is orders of magnitude harder compared to having an integrated system. Vibration in such a compact space with a very sharp blade... I want this system be stable around me. I would say, if this idea becomes popular, knife producers can create their own versions in the new models, or retrofit old knives at the shop.

Yeah, I'm already somewhat skeptical of the whole concept, having DIY'd a vibroblade out of an X-acto knife and a SonicCare toothbrush and finding it to be completely ineffective.[1] I think trying to make an ultrasonic vibration add-on for regular knives would be even harder to make into a useful product than an integrated knife/transducer. If the handle is rigidly fixed to the blade, there would be very little vibr…

https://www.sciencedirect.com/topics/engineering/ultrasonic-...

The premise is obviously sound, though it's possible this particular product doesn't work very well.

Re: Ultrasonic Chef's Knife

#624

Post by ThrowawayTestr »

mizzao wrote: post #517

What happens when the ultrasonic knife gets dull? At what point is a regular sharp knife better? Most people don't maintain their knives well and they get really ineffective over time. Others who do, probably won't buy this...

You can sharpen it, it's still a regular knife.

Re: Ultrasonic Chef's Knife

#625

Post by dotancohen »

lazide wrote: post #578
aae42 wrote: post #532

Earlier quoted context omitted.

A dull knife

A dull knife can still cut. I’ve run across ones so dull they couldn’t cut clear tape on packages. Literally just grabs the tape and it rips off . Like I used my finger. At that point, isn’t it more of a prop?

It is an ex-knife. It's just resting? It's pinning for the fjords.

Beautiful plumage, ain't it?

Re: Ultrasonic Chef's Knife

#626

Post by ThrowawayTestr »

com2kid wrote: post #375
peteforde wrote: post #336

I recently backed NeoBlade, which is an ultrasonic multi-blade cutting device for crafters. https://www.kickstarter.com/projects/hozodesign/neoblade TL;DR it's really freaking cool, though the blades do seem to get dull fairly quickly. That said, they are made of a radically different grade of steel. If the tech in the NeoBlade has been adapted successfully to the chef's knife, then all of the haters are going to sou…

I'm still in the camp that air fryers are stupid. A convection oven does literally the same thing. Also, portable air fryers make such small servings that they're useless for people with families. What the hell I going to do with three chicken wings?

Ovens take time to preheat.

Re: Ultrasonic Chef's Knife

#627

Post by brulard »

rkomorn wrote: post #622
TulliusCicero wrote: post #620

Earlier quoted context omitted.

> I'm a bit surprised to see how much snark there is in the comment sections of this video. It's "slashdot talks about the iPod announcement" all over again. Unfortunately, communities tend to devolve other time into empty cynicism and negativity, and it's hard to stop, since obviously you don't want to ban 100% of cynical or negative comments.

> since obviously you don't want to ban 100% of cynical or negative comments. Probably would be a net positive if we did.

How would we find out the real sentiment if negative comments were all filtered out?

Re: Ultrasonic Chef's Knife

#628

Post by rkomorn »

brulard wrote: post #627
rkomorn wrote: post #622

Earlier quoted context omitted.

> since obviously you don't want to ban 100% of cynical or negative comments. Probably would be a net positive if we did.

How would we find out the real sentiment if negative comments were all filtered out?

I guess it depends on how you define negative.

"I don't think this is something I would use." or "I think the price point is too high for what you get." aren't particularly negative to me.

"Nobody should buy this, it's dumb." or "Who even needs something like this, just learn to sharpen knives!" are.

Re: Ultrasonic Chef's Knife

#629

Post by SilverElfin »

john_minsk wrote: post #381
SilverElfin wrote: post #240

Earlier quoted context omitted.

Well we know this tech works because there are already ultrasonic cutters in medical and industrial equipment. So it’s more about whether they implemented it well, rather than some new fundamental discovery.

Is it realistic to have enough power in such a small form factor for this effect?

Yes think of it as a more powerful electric toothbrush. There are actually already toothbrush sized ultrasonic knives you can buy online. This just applies the same tech to what largely looks like a normal chefs knife.

Re: Ultrasonic Chef's Knife

#630

Post by spott »

tptacek wrote: post #96

Elsewhere on the thread I pointed out that I'd noticed the video doesn't show anybody doing actual prep; making an easy but deliberate thin slice of a tomato is one thing, quickly dicing an onion or a bell pepper is a very different thing. To that observation I'd add (h/t my Slack friends) this interesting site Seattle Ultrasonics stood up: https://seattleultrasonics.com/pages/knife-database One thing I notice here i…

I don’t understand judging a knife by any measure of “sharpness”? Sharpness is what the sharpener brings to the knife. Edge retention is the steel, but the skills of the sharpener (against how easy the steel is to sharpen) are what defines the edge sharpness.

This is mostly just a remark on the fact that BESS is probably just measuring the factory edge… which only matters until it has dulled the first time?

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