Think of a bench vise as a tool that's as essential to your success as a hand plane, router, or tablesaw. Although clamps might substitute in some situations, they tend to get in the way, and a vise gives you freedom to do almost any type of work. Woodworking vises differ from metalworking vises in that they attach to the bottom of the bench surface or are built into it, with (typically wood) jaws flush with the benchtop. Metalworking vises usually mount to the top of a bench.