Why are the teeth of a saw beat out so the blade is wider?

The teeth of a saw are "beat out" or set wider than the blade to create a kerf, which is the groove made by the saw as it cuts through material. This wider kerf prevents the blade from binding in the cut, allowing for smoother operation and reducing friction. Additionally, it helps to accommodate the saw's teeth, ensuring they have enough space to cut effectively without getting stuck. This design enhances the efficiency and longevity of the saw during use.