Four Sharpening Angles. Dual Diamond Hones. Precision Sharpening Made Easy.
Keep your knives sharp and ready for use with the Warthog V-Sharp A4 Knife Sharpener, an innovative sharpening system designed to deliver consistent results without requiring advanced knife-sharpening skills.
Whether you’re maintaining your favorite pocketknife, sharpening kitchen knives, or preparing hunting and fishing knives for your next outdoor adventure, the Warthog A4 makes knife sharpening easier, faster, and more consistent.
Featuring Warthog’s patented V-Sharp sharpening system, the A4 uses two spring-loaded, 325-grit diamond sharpening hones to sharpen both sides of a knife blade simultaneously.
Unlike traditional sharpening stones that require the user to maintain a precise angle by hand, the A4 features four preset sharpening angles: 15°, 20°, 25°, and 30°.
Simply select the appropriate angle, position your knife against the blade guide, and draw the blade through the sharpening system.
The A4 also includes finishing steels to help refine the cutting edge after sharpening.
Built with a durable powder-coated metal frame and a stable rubber base, the Warthog V-Sharp A4 is designed for convenient use at home, in the workshop, or wherever knife maintenance is needed.
Patented V-Sharp Sharpening System
The Warthog A4 uses an innovative V-shaped sharpening system designed to simplify knife maintenance.
Its two spring-loaded diamond hones maintain contact with the blade as it moves through the sharpener.
This design helps users produce consistent sharpening results without relying entirely on freehand technique.
Four Adjustable Sharpening Angles
One of the A4’s greatest advantages is its ability to accommodate different blade styles and sharpening preferences.
Choose from four preset angles:
The adjustable system allows users to select an angle appropriate for their knife’s intended purpose and blade geometry.
Dual 325-Grit Diamond Hones
The V-Sharp A4 includes two high-quality 325-grit diamond sharpening hones.
Diamond abrasives efficiently remove material from dull cutting edges, making them useful for restoring and maintaining knife sharpness.
The dual-hone arrangement works on both sides of the blade during the sharpening process.
Sharpens Both Sides Simultaneously
Traditional sharpening methods often require users to alternate between the two sides of a knife blade.
The Warthog A4 simplifies this process by sharpening both sides during each pass.
This design helps reduce the effort involved in maintaining a consistent edge.
Spring-Loaded Sharpening Rods
The A4’s spring-loaded sharpening hones maintain controlled contact with the blade during sharpening.
Combined with the adjustable angle settings, this design helps produce repeatable results.
Finishing Steels Included
After establishing a cutting edge with the diamond hones, users can switch to the included finishing steels.
These help refine the edge and remove remaining burrs after sharpening.
This two-stage approach makes the A4 useful for both sharpening and routine edge maintenance.
Built for a Wide Variety of Knives
The Warthog V-Sharp A4 is suitable for many common straight-edge knives, including kitchen knives, pocketknives, hunting knives, fillet knives, and general-purpose utility knives.
Its adjustable sharpening angles make it a versatile addition to a home kitchen, workshop, or outdoor equipment collection.
Durable Powder-Coated Metal Frame
The A4 features sturdy metal frame construction with a durable powder-coated finish.
This provides a stable platform for regular knife maintenance while giving the sharpener a rugged, professional appearance.
Stable Rubber Base
The included rubber base helps keep the sharpener positioned securely on a countertop or workbench.
Its compact benchtop design makes it convenient for home use without requiring permanent mounting.
Replaceable and Upgradeable Hones
The Warthog A4 is designed to accommodate replacement and optional sharpening hones.
Available upgrades include:
Optional hones are sold separately.
No Electricity Required
The V-Sharp A4 operates entirely by hand.
There are no motors, electrical cords, batteries, or complicated electronic controls.
Simply choose your angle and sharpen using the guided system.
Great for Beginners and Experienced Knife Owners
Whether you’re learning how to maintain your first pocketknife or regularly sharpening a collection of hunting and kitchen knives, the Warthog A4 offers a straightforward approach to sharpening.
Its guided design helps eliminate much of the guesswork involved with traditional freehand sharpening.
Always follow the manufacturer’s instructions and keep fingers clear of the cutting edge.
Kitchen knives, pocketknives, hunting knives, fishing knives, fillet knives, everyday carry knives, knife collectors, home cooks, hunters, fishermen, outdoor enthusiasts, workshops, and anyone looking for a convenient way to maintain sharp knife edges.
