Edge

Edge refers to the cutting or sharpened surface on tools, blades, and equipment that does the actual work—whether it's a knife blade, saw tooth, or the leading surface of a propeller. Understanding edge geometry, materials, and maintenance matters across woodworking, metalworking, food preparation, and machinery operation. Different applications demand different edge angles, hardness levels, and sharpening approaches.

These guides cover how edges are formed and maintained, what makes one edge design better than another for specific tasks, and how to restore a dull or damaged edge. You'll find information about sharpening techniques, edge retention in different materials, and why the same blade works differently depending on how it's ground or honed.