4000 grit finishing stone for refining a sharp edge
The Naniwa Gouken Hayabusa 4000 is a splash-and-go Japanese finishing stone for refining an already sharp edge. Use it after a medium stone such as 1000 grit when you want a smoother, cleaner finish on knives, carving tools and fine edge tools.
This is not a repair stone. It is a polishing and refinement stage. It rewards light pressure and careful technique, giving a more refined edge without needing a long soak.
Where it fits in the sharpening sequence
- #220 coarse: repair chips and reset damaged bevels.
- #1000 medium: create the clean working edge.
- #4000 finishing: refine and polish an already sharp edge.
Best suited to
- Japanese kitchen knives and carbon steel blades
- Carving tools, kiridashi and fine edge tools
- Users who already have a medium stone
- Sharpening setups that need a finishing stage
Who should not buy this
- Do not buy this to repair chips or damaged edges.
- Do not buy this as your only sharpening stone if your tools are dull.
- Do not use it on ceramic knives.
Care expectations
Use with water only. Splash the surface, sharpen with light pressure, rinse after use and allow the stone to dry naturally in the shade. Keep the surface flat so the finishing feel stays consistent.
Pair with the Naniwa Gouken Deluxe 1000 grit whetstone, maintain with the Grooved Flattening Stone, or browse all Japanese tool care and sharpening.
