The Geometry Debate: Are Hollow Grinds Still King of the Edge?

When you're deep in the workshop, debating the perfect edge geometry is a rite of passage. Is the deep, scooped curve of a hollow grind the ultimate choice for a pocket knife? Or are the complex, controlled curves of a Scandi grind or a flat grind superior? These questions aren't just academic; they dictate how easy a knife is to sharpen, how much effort is required during a field strip, and even how a piece is manufactured.

The conversation is often framed as a choice between convenience and performance. Historically, the hollow grind offered undeniable advantages, particularly in a manufacturing context. Because the cross-section is so thin and scooped, it minimizes the amount of metal that needs to be removed—or sharpened—to achieve a razor edge. This geometric simplicity makes it incredibly easy to maintain a keen bite, requiring less effort than grinding down a thicker, flatter bevel.

The Geometry of Ease: Why Hollow Grinds Persist

The convenience factor is significant. A hollow grind essentially scoops out the core of the blade, leaving a thin, consistent edge geometry. This design is not only mechanically simple for the hand to sharpen, but it’s also a boon for mass production. When a manufacturer can use specialized, high-speed wheels to grind both sides of the blade simultaneously, the process is faster, cheaper, and easier to scale—a massive advantage when producing inexpensive, yet functional, EDC knives.

However, the conversation around grind geometry quickly hits a brick wall: the steel itself. No matter how perfect the grind—be it hollow, flat, or convex—if the underlying material is basic, the knife will fail the moment you need it most. This is where the true art of knifemaking comes into play. The grind is merely the presentation; the steel is the soul.

Steel Choice: Where the Real Edge Retention Lives

If you want a deep, consistent edge, you need a steel designed to hold it. The comparison between basic, inexpensive steels (like 420 J2, which was featured in the discussion) and premium alloys (like Sandvik 12C27) highlights this truth. The difference isn't just in the performance—it's in the metallurgy. The steel dictates how well the edge geometry can be maintained through repeated quenching, tempering, and use.

To truly master the craft of knifemaking, you must understand that grind geometry is only one variable. You must consider the billet steel's ability to take a heat treat, the quality of the temper, and the overall structural integrity of the piece. A superb, premium steel used on a simple, robust geometry will always outperform a cheap, high-tech grind.

The debate between the hollow grind and other profiles is therefore less about which shape is 'best,' and more about understanding the trade-offs: ease of use versus ultimate performance. A skilled bladesmith or knifemaker can select a geometry that perfectly balances the desired feel and maintenance effort with the quality of the steel at hand.

Beyond the Grind: The Rogue Blades Ecosystem

Whether you are debating the merits of a thin, deep hollow grind, or you're looking to commission a custom full-tang piece in premium Damascus steel, the world of bladesmithing is vast. It's a niche that spans from the highly technical skill of the knifemaker to the appreciation of the collector. If you’re ready to take your knowledge to the next level, or simply want to see the process up close, we encourage you to dive into the community.

Don't just watch the videos—get your hands dirty. Find a Blade Angel near you to connect with seasoned makers, or sign up for a Live Workshop at HolyPlaces. If you're a creator, consider claiming a creator profile to share your own forge work. For collectors, there are endless opportunities to list a custom commission. The conversation never ends, and the skill never stops developing.