Shapton Kuromaku #320 Japanese Whetstone

Made in Japan, the Shapton Kuromaku #320 is a coarse sharpening whetstone designed for repairing damaged edges, reshaping bevels, and quickly removing metal when restoring kitchen knives. Known for its fast cutting performance, durability, and splash-and-go convenience, it is an essential stone for serious knife maintenance.

The #320 grit is the ideal first step when a knife requires more than regular sharpening. Use it to repair chips, restore worn edges, and prepare the blade before moving to medium and fine sharpening stones.

Recommended for:

• Repairing chipped knife edges
• Restoring dull or damaged knives
• Removing metal quickly
• Reshaping bevels
• Preparing knives for #1000 grit and finer stones

Why choose Shapton Kuromaku #320?

• Made in Japan
• Splash-and-go — no soaking required
• Fast cutting coarse ceramic stone
• Excellent for repair and restoration work
• Long-lasting performance with good flatness retention
• Storage case doubles as a sharpening stone holder

Specifications

Brand: Shapton
Series: Kuromaku
Grit: #320
Size: 210 × 70 × 15 mm
Weight: 668 g

Use & Precaution

The #320 grit is a coarse sharpening stone designed for repair work and heavy metal removal.

Use this stone before medium grit stones such as #1000 when repairing damaged edges or changing blade geometry.

This stone does not require soaking before use. Apply water to the surface before sharpening.

After use, rinse and allow the stone to dry completely before storing. Do not place the stone back into its case while damp, as this may cause mould and reduce the lifespan of the stone.

Note:
If you are under the age of 18 years, you cannot place orders with Mikazuki Knives.