Idahone V-Type Ceramic Rod Knife Sharpener

The Idahone CS-4 is a manual V-style sharpening system designed to maintain and restore knife edges with consistent results. By keeping the knife blade vertical and using pre-set angles, it eliminates the guesswork often associated with using bench stones, making it suitable for both kitchen and outdoor cutlery.


This sharpener is one of Idahone's most popular products and is excellent for both novice and expert. Includes spring loaded storage in the oak base and comes with two coarse and two fine grit sharpening rods which are 9" long and 5/16" in diameter. Grit ratings on the rods are approximately 1200-1500 for the fine and 100-200 for the coarse. The sharpening angles are pre-fixed at 15 degrees and 22 degree angles, so this system is well suited for both Japanese and German blades. Anyone can achieve a perfectly sharpened knife with the CS-4.

SKU: CS-4

Availability: In stock

$48.95
  • Details

    What is Included

    • Solid Oak Base: The base is crafted from solid oak, providing weight and stability during use. It features pre-drilled holes set to precise angles (approximately 20 degrees per side, 40 degrees inclusive).
    • Two Coarse Rods: These rods are designed for the first stage of sharpening. They remove a small amount of metal to re-establish the edge on dull knives.
    • Two Fine Rods: These high-alumina ceramic rods are used for the finishing stage. They hone the edge, realign the microscopic burr, and polish the blade for a smooth cut.
    • Integrated Storage: The base features storage slots, allowing all four rods and the hand guard to be stowed safely inside the wooden block when not in use.

     

    Key Features & Specifications

    • Rod Length: 9 inches.
    • Rod Diameter: 5/16 inch.
    • Abrasive Material: High-purity Alumina Ceramic.
    • Angle: Pre-set V-geometry ensures consistent bevels on both sides of the blade.
    • Safety: Includes a plastic hand guard to protect fingers during the sharpening motion.

     

    How to Use

    1. Place the wooden base on a flat, stable surface.
    2. Insert the desired rods (Coarse for dull knives, Fine for touch-ups) into the angled holes.
    3. Hold the knife blade straight up and down (vertically).
    4. Draw the blade down the rod and toward you, starting at the heel and ending at the tip, alternating between the left and right rods.
    5. Repeat the process on the Fine rods to finish the edge.

     

    Care Instructions: Over time, the ceramic rods will turn grey as they collect metal particles from your knives. This can reduce their effectiveness. To clean, scrub the rods with a scouring pad, water, and a mild abrasive cleanser (such as Bar Keepers Friend) to remove the metal load and restore the ceramic surface. Dry thoroughly before storing.

    Additional Info

    Grit Fine/Course
    SKU CS-4
    Brand Idahone
    Country of Manufacture Japan
    Manufacturer's Part Number 37014
    Manufacturer's Suggested Retail Price $49.90

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