Box (relief cuts)

This is what I mean by "relief cuts." You know how you calculate the area under a curve in calculus by making a bunch of rectangles? The smaller the rectangle, the more accurate the estimate? It's like that. Bandsaw blades have a little flexibility, but if I bend one too much, it comes off the wheel or breaks. The relief cuts relieve the tension on the blade when cutting curves. I use them with the jigsaw, too.