Researchers make hardened wooden knives that slice through steak

The sharpest knives available are made of either steel or ceramic, both of which are human-made materials that must be forged in furnaces under extreme temperatures. Now, researchers have developed a potentially more sustainable way to make sharp knives: using hardened wood. The method makes wood 23 times harder and a knife made from the material is nearly three times sharper than a stainless-steel dinner table knife.

from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/10/211020135928.htm