How to Choose a Jig Saw Blade: The biggest reason a jig saw is so capable, is the wide variety of blades available. For cutting wood alone, you’ll find blades for fast cuts, smooth cuts, straight cuts, and tightly-curved cuts. Plus, there are blades for cutting metal, plastic, acrylic, ceramics, and leather, among others. And you’ll find general-purpose blades that cut just about anything. When selecting a blade, you also need to make sure it will deliver the quality of cut you need.