This means all fries will technically be waffle cut if you zoom in far enough?
First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
11–20 of 22 posts
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#12Dupe (753 points, yesterday, 632 comments) https://news.ycombinator.com/item?id=45314592
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#13How crazy will it drive my dog?
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#14It's a good idea, but it's probably cheaper and, from an ecological standpoint better (than e-waste) to sharpen knives; a top-quality professional electric knife sharpener will set you back $170 and last you a lifetime; which is a third of the cost of the Ultrasonic's knife. Cool idea though.
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#15Hm usually ultrasonic cutting tools have small, disposable blades, which are tuned so that they vibrate right. Also they can produce an intense burning sensation in either the hand you're using (if you hold wrong / too tight) or in your off-hand (if you hit something hard, like a bone, which can pick up the vibrations). I'm sure there's an ultrasonic transducer in there but I wonder how a 40w transducer (this is typi…
Hey there, Scott here. I'm driving the knife at actually only 10W. When in resonance, this produces a stroke amplitude of 10-20 microns (depending on the spot on the blade) which is large enough to have a measurable impact on the ease of cutting. 50% reduction in peak force for tomatoes (as measured quantitatively with a robot arm), and I've seen even higher in other foods. At this power level, there's no heating of…
Hey! Thanks for commenting here.
Can you make a video of this doing any kind of bulk prep work, like dicing an onion or something? (Is there any reason this knife wouldn't be appropriate for that?)
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#16It's a good idea, but it's probably cheaper and, from an ecological standpoint better (than e-waste) to sharpen knives; a top-quality professional electric knife sharpener will set you back $170 and last you a lifetime; which is a third of the cost of the Ultrasonic's knife. Cool idea though.
One does not even need a top-quality professional electric knife sharpener to produce an edge for kitchen work. An inexpensive 1500 grit whetstone suffices.
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#17It's a good idea, but it's probably cheaper and, from an ecological standpoint better (than e-waste) to sharpen knives; a top-quality professional electric knife sharpener will set you back $170 and last you a lifetime; which is a third of the cost of the Ultrasonic's knife. Cool idea though.
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Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#18It's a good idea, but it's probably cheaper and, from an ecological standpoint better (than e-waste) to sharpen knives; a top-quality professional electric knife sharpener will set you back $170 and last you a lifetime; which is a third of the cost of the Ultrasonic's knife. Cool idea though.
One does not even need a top-quality professional electric knife sharpener to produce an edge for kitchen work. An inexpensive 1500 grit whetstone suffices.
yes, you are right. Basically $15 is all you need, and certainly better for the environment.
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#19How crazy will it drive my dog?
good point, it's within their audible frequency which is between 40Hz to 60kHz (65kHz in some dogs); the knife is 40kHz, so it will drive them completely crazy.
Re: First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting
#20It's a good idea, but it's probably cheaper and, from an ecological standpoint better (than e-waste) to sharpen knives; a top-quality professional electric knife sharpener will set you back $170 and last you a lifetime; which is a third of the cost of the Ultrasonic's knife. Cool idea though.
..and if you don't like sharpening knives, you can buy a serrated vegetable knife for cutting fruit like tomatoes.