Hapstone RS ULTRA Knife Sharpener

⚙️ Upgraded Configuration

Description

Hapstone RS Ultra

Portable knife sharpening system with premium configuration, precise angle control, and stable blade clamping.

Built for repeatable results at home, in workshops, and for enthusiasts who want a clean, consistent finish.

Hapstone RS Ultra – Package Update

Configuration changes effective February 12, 2026

Until February 12, 2026 After February 12, 2026

Included	Until Feb 12, 2026	After Feb 12, 2026
Base Hapstone RS	✔	✔
Rotating Clamp Module	✔	✔
Clamps	Hapstone RS Clamps Small Universal Angled Clamps	Small Universal Angled Clamps (2 pairs)
Advanced Stone Holder with Linear Bearing	✔	✔
Stopper	✔	✔
Precise Angle Adjuster for Hapstone RS	✔	✔
Case for Hapstone RS	✔	✔
Digital Angle Gauge	✔	✔
Ball-End Hex Screwdriver (3mm)	✔	✔

King Size Sharpie Marker	✔	✔
Stickers Hapstone	✔	✔

What’s Changed

After February 12, 2026, the RS Ultra configuration replaces the standard RS clamps with an additional set of Small Universal Angled Clamps, improving versatility and support for different blade geometries.

System Features

Specifications

Weight8.6 Ib (3.9 kg)
System size11"×5.5"×7.4" (280×143×188 mm)
Blade length40–230 mm
Blade thicknessUp to 8 mm
Sharpening angle12°–30°

Stone sizes: 6"×1" (150×25 mm) and 4"×1" (100×25 mm). Up to 4 clamps on the bar.

Materials & Build

Whole milled angled clamps are made from aircraft-grade aluminum.

Guide rods are high-quality stainless steel for rigidity and durability.

Stone holder, screws, clamps, and rotating module frame are made of solid aircraft aluminum.

Heavy 8 mm steel base with silicone feet provides excellent stability.

What’s Included

Hapstone RS Ultra knife sharpening system
Shipping box
User manual

Warranty

Hapstone RS knife sharpeners are covered by a 5-year warranty. Manufacturer support is provided throughout the full period of use.

Video Reviews

Specifications
Dimensions (L x W x H)	11"х5.5"х7.4" (280 х 143 х 188 mm)
Maximum blade length	9.1" (230 mm)
Weight	7 lbs (3900 g)
Maximum blade thickness	to 0.4" (7 mm)
Sharpening angle	from 12° to 30°
Minimum blade length	1.6" (40 mm)
The size of the stone	6" x 1" (150 x 25 mm) / 4" x 1" (100 x 25 mm)
Compatibility of Module
Vertical Module for Hapstone R2/V8	❌Incompatible
Precision angle adjustment module for Hapstone R1/R2/M3/V8	❌Incompatible
Chisel module	✅Compatible
Extendable Magnetic Table (V8 Module)	✅Compatible
Scissors Attachment for Hapstone	✅Compatible
Hapstone Lighting System	✅Compatible
Compatibility of Accessories
Thickness Compensator Hapstone RS	✅Compatible
Thickness Compensator Hapstone R2	❌Incompatible
Spring-Assisted Stopper Ring	✅Compatible
Fine-Tuning Adapter for Hapstone	❌Incompatible
Convex Adapter for Hapstone	❌Incompatible
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