Description

Hapstone Modular Platform

Maximum rigidity. Premium control.

Hapstone R2 Opti is a premium guided knife sharpener with whole milled angled clamps, a rotating clamp module, and a rigid upgrade-ready platform for advanced sharpening performance right out of the box.

Clamp system

Whole milled. Ultra rigid.

The R2 Opti comes with whole milled angled clamps made from a solid piece of aircraft-grade aluminum and anodized in black for added corrosion resistance and surface strength.

Performance

Advanced setup from the start.

Designed for users who want higher rigidity and more confidence right away, without needing to upgrade the clamp system later.

Clamping system

Stable with demanding blade geometries.

Whole milled angled clamps are especially well suited for Scandinavian grinds, kitchen knives, EDC blades, and fillet knives. The undercut design also allows sharpening knives with a full flat grind.

Whole milled angled clamps for Hapstone R2 Opti

Why R2 Opti

More rigidity. More confidence.

Hapstone R2 Opti is built for users who want a more rigid clamp setup from day one. It delivers a premium sharpening feel and is a strong choice when clamp stability is the priority.

Whole milled clamps

Machined from solid aluminum for higher rigidity and dependable blade holding.

Fast installation

Each clamp is fixed with a single screw, making setup quicker and more convenient.

Blade coverage

The clamps can slide freely along the rotating clamp module to secure knives up to 12" (300 mm) long.

Flexible bite

Two screw sets are included: short screws for thin blades and standard screws for general-purpose sharpening.

Base

Stable on any surface.

The platform base uses rubber-coated feet for secure and steady operation during sharpening.

Stone holder

Compatible with popular formats.

Supports 6" sharpening stones in Edge Pro and KME formats, giving you broad abrasive compatibility.

Sharpening performance

Smooth movement. Precise results.

The R2 Opti combines a lightweight alloy guide rod with a wooden handle, a linear ball-bearing pivot, and a rotating clamp module for consistent angle work and comfortable sharpening.

Hapstone R2 Opti guide rod and abrasive holder

What’s included

Premium kit. Upgrade-ready platform.

Hapstone R2 Opti includes the essential R2 platform with whole milled angled clamps and two screw sets, giving you a rigid and advanced setup from the beginning.

Base & Rods

1 Platform base
1 Vertical guide rod
1 Horizontal guide rod
1 Lightweight alloy guide rod with wooden handle

Pivot & Rotation

1 Linear ball-bearing pivot unit
1 Rotating clamp module
Adjustable flipping strength

Clamps

1 pair of Whole Milled Angled Clamps for Hapstone R2

Screws

2 sets of screws
Short screws for thin blades
Standard screws for general-purpose sharpening

Technical details

Specifications

System	Hapstone R2 Opti
Platform	Hapstone Modular Platform
Clamp Module	Rotating clamp module with adjustable flipping strength
Included Clamps	Whole Milled Angled Clamps for Hapstone R2 (2 pcs)
Sharpening Angle Range	8° to 35° (depends on blade geometry)
Blade Capacity	Up to 12" (300 mm) long and up to 1/4" (8 mm) thick
Clamp Material	Whole milled aircraft-grade aluminum, black anodized
Screw Options	Short screws for thin blades and minimum bite Standard screws for general-purpose sharpening
Stone Compatibility	6" (160 mm) stones, Edge Pro & KME formats
Pivot Type	Linear ball-bearing pivot, no lubrication required
Guide Rod	Lightweight alloy guide rod with wooden handle
Base	Rubber-coated feet for enhanced stability
Sharpening Stones	Not included
Warranty	5 years

Compatibility

Supported clamps and add-ons

Compatible Clamps	Universal Angled Clamps for Hapstone R2 Universal Straight Clamps for Hapstone R2 Whole Milled Angled (Fillet) Clamps for Hapstone R2 (included) 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	Precise Angle Adjuster for Hapstone R1/R2/V8/M3 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.

Specifications
Dimensions (L x W x H)	23.6"х 8.4" х 10.8" (600 mm x 215 mm x 275 mm)
Maximum blade length	12" (300 mm)
Weight	7lb (3500g)
Maximum blade thickness	to 0.3" (8 mm)
Sharpening angle	from 8° to 35°
Minimum blade length	1,6" (40 мм)
The size of the stone	6" x 1" (150 x 25 mm) / 4" x 1" (100 x 25 mm)
Kit
Whole milled angled (fillet) clamps Hapstone (Pair)	Included
Universal Angled Clamps for Hapstone R2 (Pair)	—
Small Whole milled angled clamps Hapstone (Pair)	—
Rotating Clamp Module (R2 Module)	Included
Extendable Magnetic Table (V8 Module)	—
Fine-Tuning Adapter for Hapstone	—
Spring-Assisted Stopper Rings	—
Thickness Compensator Hapstone	—
Digital Angle Gauge	—
Ball-End Hex Screwdriver	—
Marker	Included
Compatibility of Module
Vertical Module for Hapstone R2/V8	✅Compatible
Precision angle adjustment module for Hapstone R1/R2/M3/V8	✅Compatible
Extendable Magnetic Table (V8 Module)	✅Compatible
Scissors Attachment for Hapstone	✅Compatible
Hapstone Lighting System	✅Compatible
Compatibility of Accessories
Thickness Compensator Hapstone RS	❌Incompatible
Thickness Compensator Hapstone R2	✅Compatible
Spring-Assisted Stopper Ring	✅Compatible
Fine-Tuning Adapter for Hapstone	✅Compatible
Convex Adapter for Hapstone	✅Compatible
Compatibility of Clamps
Small Side Clamps for Hapstone	✅Compatible
Small Whole milled angled clamps Hapstone	✅Compatible
Universal Angled Clamps for Hapstone	✅Compatible
Whole milled angled (fillet) clamps Hapstone	✅Compatible