Plane, Lever, Wheel, and Axle on an Inclined Plane A hand drill (egg beater style) makes use of the following simple machines: a wheel and axle, and a lever. The drill press uses the same basic concepts but includes a second lever to create a more rigid structure that can support heavier loads. The third type of machine used in woodworking is called a drill bit. These are different from regular drill bits which are used with electric drills to make small holes through material such as wood for screws or nails. Drill bits are designed to cut deeper holes into wood than regular bits. They are made out of hardened steel with a sharp cutting edge. Some people say this tool is like using a power sander to sand off wood fibers. I haven't had much need for this tool myself but it's nice to know it's available if you do need it. A router is another common woodworking tool used to shape solid surfaces such as doors and drawer fronts. It works by having a spinning disk with fixed cutting tools that touch down on the surface being worked on. Routing disks come in several sizes for different projects. For example, there is a 12-inch disk for shaping wide panels and a 5-inch disk for shaping narrow molding.