Hapstone R2 Black Knife Sharpener

What sets the Black Edition apart is its rich configuration. It is the first R2 model to feature four clamps by default — two universal angled clamps and two whole milled angled (fillet) clamps. This combination ensures excellent performance with a wide range of knives — from compact EDC blades to long kitchen knives.

In addition to the rotating clamp module and digital-ready stone holder, the Black Edition includes several exclusive accessories out of the box: a digital angle gauge, a fine-tuning adapter, spring-assisted stoppers, and a ball-end hex screwdriver. It’s the ultimate upgrade for anyone looking to get the most out of the Hapstone R2 platform.

What's Included

• Platform base
• Vertical and horizontal guide rods
• Linear ball-bearing pivot unit
• Rotating clamp module
• Universal Angled Clamps (2 pcs)
• Whole Milled Angled (Fillet) Clamps (2 pcs)
• Fine-Tuning Adapter
• Spring-Assisted Stopper Rings (2 pcs)
• Digital Angle Gauge
• Ball-End Hex Screwdriver (4 mm)

Note: Sharpening stones are not included. Please choose your preferred stones and accessories using the product options above.

Key Features

• Rotating clamp module with adjustable flipping strength
• Four included clamps for ultimate versatility
• Sharpening angle range: 8° to 40° (*depends on clamp and blade)
• Max blade length: 12" (300 mm), max thickness: 1/4" (8 mm)
  
• Supports 6" (160 mm) stones (Edge Pro & KME formats)
• Linear ball-bearing pivot for smooth, maintenance-free operation
• Lightweight alloy guide rod with comfortable wooden handle
• Rubber-coated feet for stable operation on any surface

Clamp Compatibility

The Black Edition supports all clamp types available for the R2 platform:

• Universal Angled Clamps for Hapstone R2 (2 pcs – included)
• Whole Milled Angled (Fillet) Clamps for Hapstone R2 (2 pcs – 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

Modular Add-ons (Optional)

• Precise Angle Adjuster for Hapstone R1/R2/V8/M3
• Convex Adapter for Hapstone (Gen 2)
• Convex Mini-Adapter
• Spring-Assisted Stopper ⌀6mm
• 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 sharpening round knives (leathercraft)

Warranty

All Hapstone R2 sharpeners include a 5-year warranty. You can count on reliable performance and full manufacturer support throughout the entire service life.