What is the first operation in the three basic sharpening processes?

In the context of sharpening tools, the first operation is grinding. This step involves removing metal from the tool to create a new edge or to reshape the cutting surface. Grinding is typically performed on a grinding wheel, which can effectively reshape dull blades and remove significant amounts of material.

By starting with grinding, a rough edge is formed and essential geometry is established, allowing for the subsequent steps of honing, stropping, and polishing to refine the edge and achieve the desired sharpness. Each of these latter processes builds upon the foundation created by the grinding operation, ensuring a smooth, effective cutting surface.