Choose a broad surface and a deep block
The W4 measures 209 × 70 × 60 mm. Its broad rectangular face provides room for blade movement, while the thick body gives this model a substantial bench-stone format. Secure the stone on a suitable stable support before sharpening.
Use its 1000-grit surface for medium sharpening. Work through a coarser stone first if significant edge repair is needed, then move to a finer finishing stone when a more refined edge is desired.
Prepare the stone with water according to the supplied instructions and keep the surface wet while working. Rinse after use, dry naturally in the shade and flatten the working face when it becomes uneven.
