👉 Jackknives are a type of knife that is typically used for cutting or drilling holes in wood, metal, or other materials. They are often made from hard and durable materials such as steel or aluminum, and can be found in various sizes and styles. In traditional knife-making techniques, jackknife knives were commonly used to cut through wood, which was a common material used in woodworking projects. Jackknives have been used for centuries as an essential tool in the kitchen, especially during times of scarcity