Certified kitchen knife nerd Scott Heimendinger used a robot arm on multiple chef’s knives to collect 100,000 data points ...

Henckels’ Self-Sharpening Knife Set Chops ‘Like a Dream,’ and It’s 68% Off Right Now. It includes a 3.5-inch paring knife, steak knives, chef’s knife, and more. By. Megan Schaltegger.