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Hapstone Modular Platform
Hapstone R2 Black is a fully equipped guided knife sharpener with universal angled clamps, whole milled angled clamps, and a Fine-Tuning Adapter already included for maximum versatility across different knife types.
Complete setup
Hapstone R2 Black is a complete system here and now — no need to build the configuration later. It already includes the core upgrades many users add separately.
Versatility
With both universal angled clamps and whole milled angled clamps included, the R2 Black is a strong choice for covering the widest possible range of knife shapes and sharpening tasks.
Precision
The included Fine-Tuning Adapter allows quick and precise micro-adjustments of the sharpening angle. It makes angle control smoother and more accurate during sharpening.
Universal clamps
Universal Angled Clamps can be adjusted inward or outward to handle a wide range of blade lengths and geometries.
Whole milled clamps
Whole Milled Angled Clamps provide a solid one-piece construction for dependable blade holding and excellent control.
Why R2 Black
Hapstone R2 Black is built for users who want a stronger setup from day one. With two clamp styles and fine angle adjustment already included, it covers more sharpening scenarios without requiring immediate add-ons.
Universal angled clamps and whole milled angled clamps are included in one package.
The Fine-Tuning Adapter helps make small angle changes quickly and precisely.
This is a complete sharpening system here and now, not a base configuration that requires immediate upgrades.
A strong option for maximizing compatibility with different blade shapes, sizes, and sharpening tasks.
Clamp options
The R2 Black combines versatile universal clamps with rigid whole milled angled clamps in one kit. This gives you more freedom to choose the best clamping style for different knives without needing immediate add-ons.
Clamp comparison
| Universal Angled Clamps | More flexible in positioning, easy to adapt for different blade lengths and shapes, excellent for general-purpose sharpening. |
|---|---|
| Whole Milled Angled Clamps | More rigid one-piece construction, confidence-inspiring blade holding, excellent when maximum structural stiffness is preferred. |
| Why both matter | Having both clamp types in one system gives you broader practical coverage and more freedom to choose the right clamp style for each knife. |
Stone holder
Supports 6" sharpening stones in Edge Pro and KME formats, giving you wide abrasive compatibility.
Base
The platform base with rubber-coated feet helps keep the sharpener steady on the work surface during use.
What’s included
Hapstone R2 Black includes the essential R2 platform plus upgraded clamp options and fine angle adjustment, making it a strong all-in-one configuration for users who want maximum flexibility from the beginning.
1 Platform base
1 Vertical guide rod
1 Horizontal guide rod
1 Lightweight alloy guide rod with wooden handle
1 Linear ball-bearing pivot unit
1 Rotating clamp module
Adjustable flipping strength
1 pair of Universal Angled Clamps for Hapstone R2
1 pair of Whole Milled Angled (Fillet) Clamps for Hapstone R2
1 Fine-Tuning Adapter for precise angle control
2 Spring-Assisted Stopper ⌀6 mm
1 Ball-End Hex Screwdriver 4 mm “Fire Orange” for Hapstone R2
1 Digital Angle Gauge Hapstone
Technical details
| System | Hapstone R2 Black |
|---|---|
| Platform | Hapstone Modular Platform |
| Clamp Module | Rotating clamp module with adjustable flipping strength |
| Included Clamps | Universal Angled Clamps for Hapstone R2 (2 pcs) Whole Milled Angled (Fillet) Clamps for Hapstone R2 (2 pcs) |
| Included Adapter | Fine-Tuning Adapter |
| Sharpening Angle Range | 12° to 40° (varies by clamp and blade) |
| Blade Capacity | Up to 12" (300 mm) long and up to 1/4" (8 mm) thick |
| Stone Compatibility | 6" (160 mm) stones, Edge Pro & KME formats |
| Pivot Type | Linear ball-bearing pivot, no lubrication needed |
| Guide Rod | Lightweight alloy guide rod with wooden handle |
| Base | Rubber-coated feet for enhanced stability |
| Sharpening Stones | Not included |
| Warranty | 5 years |
Compatibility
| Compatible Clamps | Universal Angled Clamps for Hapstone R2 (included) Whole Milled Angled (Fillet) Clamps for Hapstone R2 (included) Universal Straight Clamps for Hapstone R2 Central Y-Shaped Clamp for Hapstone R2 Whole Milled Straight Clamps for Hapstone RS Small Whole Milled Angled Clamps for Hapstone RS Small Central Y-Shaped Clamp for Hapstone RS Small Universal Angled Clamps for Hapstone RS |
|---|---|
| Optional Add-ons | Convex Adapter for Hapstone (Gen 2) Convex Mini-Adapter Spring-Assisted Stopper ⌀6 mm Thickness Compensator for R2/V8 Vertical Rod (Gen 2) for R2/V8 Hapstone Lighting System Extendable Table Module (V8) Chisel Sharpening Module Scissors Sharpening Module Turntable Module for round knives |
Note: Sharpening stones are not included. Please select compatible stones and optional accessories using the product options above.
