Spyderco Sharpener CBN Benchstone SP306CBN

The Spyderco Sharpener CBN Benchstone is a premium 3" x 8" sharpening stone built for serious knife users who demand precision, durability, and consistent results. Designed to meet the needs of collectors, outdoorsmen, and professional sharpeners alike, this Cubic Boron Nitride (CBN) bench stone delivers fast, efficient steel removal while maintaining exceptional flatness and longevity.

Crafted with dual-sided CBN surfaces, this bench stone features 400 mesh on one side for aggressive edge repair and reprofiling, and 800 mesh on the other for refining and finishing your edge. The 400 mesh side is ideal for restoring dull or damaged blades, while the 800 mesh surface produces a sharp, clean working edge suitable for everyday carry knives, hunting knives, and kitchen cutlery. CBN abrasives are renowned for their hardness—second only to diamond—making them extremely effective for sharpening modern high-performance steels.

Measuring a generous 3 inches by 8 inches, the Spyderco CBN Benchstone provides ample surface area for long, smooth strokes. This larger format allows for better control and consistent sharpening angles, especially when working on longer blades. Whether you're maintaining a folding knife, fixed blade, or culinary knife, the full-size platform ensures stability and accuracy.

Weighing approximately 21 ounces (about 1.3 pounds) for the stone alone, this bench stone offers a solid, stable feel during use without being overly cumbersome. Its substantial weight helps keep it planted on your work surface, reducing movement while sharpening. The stone is engineered to remain flat over extended use, ensuring dependable performance and uniform results over time.

One of the biggest advantages of Cubic Boron Nitride is its durability and cutting speed. CBN cuts cleanly and efficiently, reducing sharpening time compared to many traditional stones. It also resists loading and maintains its abrasive properties longer, making it an excellent long-term investment for knife enthusiasts. Additionally, CBN works exceptionally well on high-alloy and super steels that can be challenging for conventional sharpening stones.

The Spyderco Sharpener CBN Benchstone is designed for dry use or with a light lubricant, depending on your sharpening preference. Its rugged construction ensures reliability whether you’re touching up a daily carry knife or restoring a heavily used outdoor blade.

Available at Smoky Mountain Knife Works, the Spyderco Sharpener CBN Benchstone is an essential addition to any sharpening setup. If you’re looking for a professional-grade sharpening stone that combines cutting-edge abrasive technology, generous working surface, and long-lasting performance, this 3" x 8" CBN bench stone delivers the precision edge you expect from Spyderco. Elevate your sharpening routine with a stone built for serious steel and dependable results every time.