Detroit Edge Tool

On June 24, 1885, Detroit Edge Tool Works was incorporated in the state of Michigan, and is now the oldest machine knife manufacturer in the world. The original firm manufactured precision machine knives, originally for lumber and woodworking then later for the metal working industry. As times changed after Word War II, the firm started to manufacture machine tool components such as hardened and ground, precision detachable ways and rails. These products are both flame hardened, then precision ground.