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Hapstone RS Black
Hapstone RS Black is a precision knife sharpening system engineered in Ukraine — stable, compact, smooth, and designed for repeatable results.
Precision system
Hapstone RS Black is designed for users who want smooth motion, precise angle control, and a strong modular platform for consistent sharpening results.
Black edition
The black configuration combines the RS platform with upgraded components, reliable clamps, and a clean professional appearance.
System view
The RS Black platform combines a stable base, rotating clamp module, precise guide system, and smooth abrasive movement for comfortable sharpening.
Package update
Old configuration was discontinued on May 11, 2026. New configuration became available for sale on May 12, 2026.
| Included | Until August 26, 2026 | From August 26, 2026 |
|---|---|---|
| Base Hapstone RS | ✔ | ✔ |
| Rotating Clamp Module | ✔ | ✔ |
| Clamps | Hapstone RS Clamps — 2 pairs | Hapstone RS Clamps — 1 pair Small Universal Angled Clamps — 1 pair |
| Stone Holder | Standard Stone Holder | Advanced Stone Holder with Linear Bearing |
| Stopper | ✔ | ✔ |
| Thickness Compensator | ✔ | ✔ |
| Digital Angle Gauge | ✔ | ✔ |
What’s changed: From August 26, 2026, RS Black includes an Advanced Stone Holder with Linear Bearing for smoother motion and better control, plus an updated clamp set: 1 pair of Hapstone RS Clamps + 1 pair of Small Universal Angled Clamps.
Clamps
The updated clamp set improves versatility and helps hold different blade types securely during sharpening.
Stone holder
The Advanced Stone Holder with Linear Bearing provides controlled abrasive movement and a more refined sharpening feel.
Why Hapstone RS Black
Hapstone RS Black is built for users who want stability, precision, modularity, and a clean professional setup for kitchen knives, workshop tools, and enthusiast sharpening.
Heavy base and rigid construction help keep the system stable during sharpening.
Designed for repeatable sharpening angles and controlled abrasive movement.
Compatible with RS family clamps, accessories, and modular upgrades.
Includes upgraded holder and versatile clamp configuration in the new package.
Sharpening range
Hapstone RS Black is designed for knives from 40 to 230 mm in length and up to 7 mm thick, making it suitable for a wide range of sharpening tasks.
Technical details
| System | Hapstone RS Black | |
|---|---|---|
| Weight | 9.6 lb / 3.9 kg | |
| Blade Length | 40 mm – 230 mm | |
| Blade Thickness | Up to 7 mm | |
| Sharpening Angle | 12° – 30° | |
| Stone Compatibility | 6×1 in / 150–160 × 25 mm 4×1 in / 100 × 25 mm |
|
| Materials | Aircraft-grade aluminum, stainless steel guides, heavy steel base | |
| Sharpening Stones | Not included | |
| Warranty | 5 years | |
