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.
DIY Breadboards All you need are some scrap pieces of hardwood, such as oak or maple (I used oak because that's what I had), a jig saw (and please wear safety goggles), sand paper, cordless drill and food grade mineral oil
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Handle the Curves: Forcing a jig saw into the cut becomes problematic when making curved cuts. If you hold the saw with one hand only and push it around the curve, you end up pushing the saw sideways. The first remedy for this is to slow your feed rate when making curved cuts. The second is to hold the saw with two hands. With a little practice, you’ll be cutting curves that are dead-on every time.