The Warthog A4- Evolution of a classic!

Warthog Sharpener’s newest countertop addition is the A4, a revamp of the legendary Warthog V-Sharp system used on the Classic II and the original Classic sharpener. However, they have taken it a step further in true Warthog style. Warthog Sharpeners have added a 15 degree angle to their new A4 model, offering four settings to cover all the bases for your knife needs (15°, 20°, 25° and 30°). Like the Classic II, the A4 is equipped with two 325-grit double-sided diamond rods and finishing steels that simultaneously sharpen both sides of the blade. The pencil sharpener weighs about a pound and has a handcrafted metal frame, a sturdy rubber base, and a powder-coated finish.

Change of trend in the kitchen

A recent phenomenon is the wide adoption of the 15 degree cutting edge by knife makers. The 15 degree edge exhibits less cutting friction, particularly when paired with thinner blade geometry. This takes a cue from Japanese chef/sushi knives, who have been using sharp angles on their knives with great results. Contemporary Asian knives typically have a double bevel with a 15 degree angle on both sides. Among these knives are the Santoku and the Nakiri. In the home kitchen, a 15-degree angle is perfect for modern chef’s knives. Use the other angles for heavier blades, pocket knives, and EDC knives. Whether it’s for your professional or in-house home cook, the Warthog A4 covers all the bases.

Step into the future of knife sharpening with Warthog Sharpeners A4!


  • 4 adjustable angles (15°, 20°, 25°, 30°)
  • 325 grit natural diamond rods
  • metal frame construction
  • Durable powder coat finish
  • 4 colors, black, metallic gray, red and sky blue
  • Solid Rubber Base or Elite Model with wood base
  • Finishing Steels (Included)
  • 1 year warranty
  • Weight = 25 ounces (709 grams)
  • MSRP: $99.99

For over 20 years Warthog Blade Sharpeners have been manufacturing and exporting high quality diamond knife sharpeners. Warthog was established in 1999 with the goal of creating a world first and innovative knife sharpener that would deliver better results than any competitor on the market. Treat your blades with the respect and care they deserve. We have done extensive research on various types of knife sharpeners, and the results may surprise you. Microscopic photographs of the edges show just how much damage traditional sharpeners can cause.

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