Kai Seki Magoroku Whetstone Fine 4000 Grit
The Seki Magoroku Whetstone 4000 Grit is a fine Japanese sharpening stone for refining and finishing knife edges. It follows a medium stone to leave a sharp, smooth edge.
What Is a 4000 Grit Whetstone Used For?
4000 is the most common fine grit for finishing. Use it after a medium stone to refine the edge. The result is a very sharp edge with a smooth, polished bevel.
Choosing the Right Grit
- Coarse (220 to 400 grit): Fast metal removal for chips, damage and reshaping.
- Medium (1000 to 2000 grit): Routine sharpening of a dull but undamaged blade.
- Fine (4000 to 8000 grit): Finishing and polishing to a mirror-like edge.
Features
- 4000 Grit Fine Stone – Refines and smooths the edge after medium-grit sharpening.
- Storage Case – Keeps the stone protected between uses.
- Soaking Lid – Lid holds water for soaking the stone before sharpening.
- Non-Slip Base – Feet on the base keep the stone steady while sharpening.
- Suits All Knives – Can be used on all knife types, including premium Japanese blades.
Dimensions and Weight
- Dimensions (L x W x H): 184mm x 64mm x 15mm
How to Use
Soak the Stone
- Soak the whetstone in water for about 10 minutes before use.
- Place it on a stable, non-slip surface.
- Keep the surface slightly wet while sharpening by adding a little water as needed.
Double Bevel Knives
- Hold the blade at about 15° to the stone.
- Move the blade toward and away from you with light pressure until a fine burr forms.
- Work along the full length of the edge.
- Sharpen both sides equally to keep the edge symmetrical.
Single Bevel Knives
- Sharpen the bevelled side first, using the angle recommended by the knife maker.
- Work with light pressure until a fine burr forms.
- Turn the knife over and sharpen the flat back with about one tenth as many strokes.
Remove the Burr
- Lay newspaper on a flat surface.
- Hold the knife at the same angle and draw the edge lightly across the paper, side to side.
- Stop when the edge feels smooth along its length.
After Sharpening
- Wash, dry and store the knife safely.
Made In: Japan
Brand: Kai
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