Quantity:
Ha-No-Kuromaku stones are the workhorses of many woodshops. Precisely graded sharpening media are bonded to create a stone that is durable yet fast cutting.
The blue-black 320x stone is an excellent everyday shaping stone for regrinding the bevel or grinding a very dull blade. It’s one of three shaping stones with a range code of 1 (along with white 120x and moss 220x); the larger the blade to be shaped, the coarser the stone you should choose.
It measures 210mm × 70mm × 15mm (8 1/4" × 2 3/4" × 5/8") and is supplied in a color-matched live-hinge plastic storage case that also serves as a stand. Four urethane feet on the vented case bottom give a good grip, while molded ribs on the case lid hold the stone in place. Both sides of the stone are usable.
The stone can be used with the Shapton stone holder, field holder and pond. It can also be used as an oil stone, but then must continue to be used with oil only. Weighs just shy of 20 oz (550g).
| Sharpening Stage | Grit Range (µ) | Micron (µ) | Kuromaku | Range Code |
| Shaping 30.1–150 | 122.5 | 120 | 1 | |
| 30.1–150 | 66.82 | 220 | ||
| 45.94 | 320 | |||
| Grinding 10.1–30 | 20.1–30 | 29.4 | 2A | |
| 25 | ||||
| 15.1–20 | 20 | 2B | ||
| 10.1–15 | 14.7 | 1000 | 2C | |
| 11.5 | ||||
| Honing 3.01–10 | 8.01-10 | 9.8 | 1500 | 3A |
| 6.01 | 7.35 | 2000 | 3B | |
| 6.7 | ||||
| 3.01-6 | 4.9 | 3C | ||
| 4 | ||||
| 3.68 | ||||
| Polishing 0.25-3 | 1.51-3 | 3 | 4A | |
| 2.94 | 5000 | |||
| 2.45 | ||||
| 2 | ||||
| 1.84 | 8000 | |||
| 0.76-1.5 | 1.47 | 4B | ||
| 1.2 | ||||
| 1 | 12000 | |||
| 0.92 | ||||
| 0.85 | ||||
| 0.25-0.75 | 0.49 | 30000 | 4C | |
| 0.44 |
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Variations:
Shapton 320x Blue-Black Ha-No-Kuromaku Ceramic Stone
Ha-No-Kuromaku stones are the workhorses of many woodshops. Precisely graded sharpening media are bonded to create a stone that is durable yet fast cutting.
The blue-black 320x stone is an excellent everyday shaping stone for regrinding the bevel or grinding a very dull blade. It’s one of three shaping stones with a range code of 1 (along with white 120x and moss 220x); the larger the blade to be shaped, the coarser the stone you should choose.
It measures 210mm × 70mm × 15mm (8 1/4" × 2 3/4" × 5/8") and is supplied in a color-matched live-hinge plastic storage case that also serves as a stand. Four urethane feet on the vented case bottom give a good grip, while molded ribs on the case lid hold the stone in place. Both sides of the stone are usable.
The stone can be used with the Shapton stone holder, field holder and pond. It can also be used as an oil stone, but then must continue to be used with oil only. Weighs just shy of 20 oz (550g).
| Sharpening Stage | Grit Range (µ) | Micron (µ) | Kuromaku | Range Code |
| Shaping 30.1–150 | 122.5 | 120 | 1 | |
| 30.1–150 | 66.82 | 220 | ||
| 45.94 | 320 | |||
| Grinding 10.1–30 | 20.1–30 | 29.4 | 2A | |
| 25 | ||||
| 15.1–20 | 20 | 2B | ||
| 10.1–15 | 14.7 | 1000 | 2C | |
| 11.5 | ||||
| Honing 3.01–10 | 8.01-10 | 9.8 | 1500 | 3A |
| 6.01 | 7.35 | 2000 | 3B | |
| 6.7 | ||||
| 3.01-6 | 4.9 | 3C | ||
| 4 | ||||
| 3.68 | ||||
| Polishing 0.25-3 | 1.51-3 | 3 | 4A | |
| 2.94 | 5000 | |||
| 2.45 | ||||
| 2 | ||||
| 1.84 | 8000 | |||
| 0.76-1.5 | 1.47 | 4B | ||
| 1.2 | ||||
| 1 | 12000 | |||
| 0.92 | ||||
| 0.85 | ||||
| 0.25-0.75 | 0.49 | 30000 | 4C | |
| 0.44 |
