[gurgeous]

I personally watched Scott spend years working on the project and obsessively iterating on the steel, the vibration pattern, the circuitry, the handle, and the form factor. Scott is a hacker, one of us for sure. I mean, the guy built a custom robot just to measure cutting efficiency...

The knife is amazing and exactly as shown in the video. Rand Fishkin has a nice short on LinkedIn trying out the knife too. I think he shows one his (sharp) kitchen knives slicing through a lemon, then the Ultrasonic. It's astounding.

Disclaimer: I am a (tiny) angel investor in Seattle Ultrasonics.

[tptacek]

Does that video show him doing actual prep? I 100% believe he made a knife that can make a paper-thin slice of a lemon. But that's not what a chef's knife is for. As someone who thinks the world would be a better place if this product worked and was successful: for god's sake record someone processing an onion. That's what matters.

[gurgeous]

In Rand's video he does an "old" lime, mozzarella, and a shallot. It's just a quick vid he did in like five minutes but it shows some prep. Rand is a prolific amateur chef...

https://www.linkedin.com/feed/update/urn:li:activity:7374472...

Disclaimer: I've enjoyed many delicious meals at Rand's table

[tptacek]

So, I just watched this, and he's not processing a shallot, he's just slowly talking thin slices off it. Also: even when my MAC is rolled over and needs a hone, it still does a lime just as well.

I'm not saying this knife doesn't work just that I'm noticing that none of the videos show it working.

Seriously, it is only a little bit of an exaggeration to say that the entire job of a chef's knife is to quickly process an onion. What's especially weird is that even an inert knife with its factory edge will show well in an onion dice video!

[ramraj07]

If thats the actual best demonstration thats not good at all. Like either he is the worst cook ever or the knife is actually difficult to go down straight with..

[JimmyBiscuit]

Im sorry but the video feels a bit disingenuous with the way he is cutting the lime. With the normal knive he just pushes straight down on the lime and with the vibroknife he actually does a slicing move. Same with the cheese. It doesnt feel like an honest comparison

[sfink]

Maybe, though I'll note that this matches how I use regular knives with cheese & similar things: with a dull unscalloped knife I have to carefully go straight down to avoid tearing. If my knife is sharp (or temporarily oiled) and the food doesn't stick, I'll slice. Because I can. The end result is different: thinner slices, less crushing. Also faster.

[abandonliberty]

I saw the same thing immediately. The robot arm could be calibrated to use a real slicing motion as well. They're misrepresenting the actual performance of this product.

100% confirmed meme product.

[sublinear]

Free idea: put this tech in a mandoline slicer.

Even the best tend to struggle with consistency and can only go so thin due to all the friction. An ultrasonic mandoline that can overcome all that would probably fly off the shelves and better match the original industrial intent.

[kristjansson]

On one hand I would buy that instantly. On the other hand, it’s already missing small pieces thanks to my current mandolin. Not sure I want to make my scariest utensil scarier.

[sethammons]

I took a few mm off my pinky with one without noticing until I saw blood in my prep dish. They are to be respected.

[shmeeed]

Had to read that twice. I feel you! It's been nearly 20 years and I can still see the scar.

[sebastiennight]

> An ultrasonic mandoline that can overcome all that would probably make fingers fly off the shelves and better match the original industrial intent.

FTFY

[quantumwannabe]

Do you know if the knife still acts "sharp" when the physical blade is dull or does it still need regular sharpening like a normal knife?

[system2]

Rank Fishkin from MOZ? Why is he testing knives on LinkedIn?