'World's First' Ultrasonic Chef's Knife Vibrates 40,000 Times Per Second for Easy Cutting
www.cnet.com
Seattle Ultrasonics' $399 C-200 promises to slash cutting force in half with blade vibrations that you can't see, hear or feel.
  • blargh513@sh.itjust.worksEnglish
    2·
    1 hour ago

    Show me how it cuts through a fat block of cheddar and then talk to me.

    Thats the only thing I wrestle with, and I keep my knives sharp.

    • seang96@spgrn.comEnglish
      3·
      44 minutes ago

      Cleaving is mostly about friction. Cutting a block of cheddar is pretty much all cleaving, and a very sharp cutting edge doesn’t provide much advantage. My blade vibrates along the blade face, so foods experience the coefficient of kinetic friction, not static friction. This reduces cutting forces, and does so in a way that’s totally independent of the sharpness of the edge.

      Looks like the inventor posted a comment explicitly about cheddar in the link.