Naniwa Basic Stone grain 1000/3000

The Naniwa Basic Stone 510/530 is a double-sided sharpening stone from the Japanese sharpening specialist Naniwa. This water stone has a medium-fine side with a grit size of 1000 (red), and a fine side with a grit size of 3000 (yellow). As such, this stone is excellent for sharpening an already relatively sharp edge. Use the 1000 side to sharpen the edge, and then polish it with the 3000 side. To sharpen a knife that is actually blunt, it is better to opt for a coarser sharpening stone, such as the Basic Stone 502/510.