Kershaw Leek Black Assisted Folding Knife by Ken Onion Review

One Month Later: Kershaw Leek Black Assisted Folding Knife by Ken Onion Review

My search for a reliable, everyday carry (EDC) folding knife led me to the Kershaw Leek Black Assisted Folding Knife by Ken Onion. This particular model caught my eye with its sleek, minimalist design and Ken Onion’s renowned engineering. For years, I’ve relied on a variety of tools across different environments – from fine-tuning equipment in a lab to making field repairs on machinery, and the need for a dependable, sharp blade that can handle diverse tasks is paramount.

The catalyst for this purchase was the frustrating experience of a generic utility knife failing me at a critical moment. It was a simple task, but the blade dulled instantly, and the cheap handle offered no grip or confidence. I needed something that felt substantial, opened reliably, and held an edge longer, something that wouldn’t let me down when precision or speed mattered.

My initial impression of the Kershaw Leek was one of refined utility. The matte black finish felt modern and unobtrusive, a stark contrast to the often flashy designs of other knives. The slim profile immediately suggested comfortable pocket carry, and the weight felt balanced, hinting at solid construction without being cumbersome. I briefly considered a few other compact flippers, but the Leek’s reputation for smooth action and Ken Onion’s design pedigree ultimately swayed me. It arrived with a sense of quiet competence, a promise of efficiency.

Real-World Testing: Putting Kershaw Leek Black Assisted Folding Knife by Ken Onion to the Test

First Use Experience

My testing ground for this knife began with everyday chores. Opening packages, breaking down cardboard boxes, trimming stray threads from clothing, and even performing minor adjustments on my workbench became its initial proving grounds. I specifically sought out tasks that would challenge a smaller blade’s sharpness and the knife’s opening mechanism.

The SpeedSafe ambidextrous assisted opening system proved to be a revelation. With a gentle pull on the flipper or a push on the thumbstud, the blade deployed with remarkable speed and smoothness. This was a significant upgrade from manual openers, especially when I needed to access the blade quickly. The 3-inch blade was the perfect size for most of these tasks; it offered enough cutting surface for slicing through tape and cardboard but remained discreet enough for detailed work.

I didn’t encounter any significant issues during the initial phase. The knife felt secure in my hand, and the frame lock provided a reassuringly solid lock-up, giving me confidence even when applying moderate pressure. There was a slight learning curve with the Tip-Lock slider, ensuring the blade stayed securely closed, but this quickly became second nature.

Extended Use & Reliability

After a solid month of consistent daily use, the Kershaw Leek Black Assisted Folding Knife by Ken Onion has proven its mettle. It has become my go-to for countless small tasks, from cutting twine on gardening supplies to slicing through stubborn packaging seals. The Sandvik 14C28N blade steel has demonstrated excellent edge retention; even after repeated use on tougher materials like heavy-duty plastic ties, it still slices cleanly.

Durability has been excellent so far. The Diamond-Like Carbon (DLC) coating on both the blade and handle has resisted scratches remarkably well, even after being carried in a pocket alongside keys and coins. There are no signs of loosening screws or developing blade play, which speaks volumes about Kershaw’s build quality.

Maintenance has been minimal. A quick wipe-down after use is usually sufficient, and a light application of Kershaw’s own Speed Lube keeps the assisted opening mechanism running as smoothly as day one. Compared to some cheaper knives I’ve owned, which would develop rust spots or become stiff after minimal exposure to moisture, this Leek feels incredibly robust. It has outperformed many of my previous EDC options in terms of both cutting performance and long-term resilience.

Breaking Down the Features of Kershaw Leek Black Assisted Folding Knife by Ken Onion

Specifications

• Blade Length: 3 inches – This is a crucial aspect for an EDC knife, offering a balance between capability and manageability. It’s long enough for most cutting tasks without being overly large or intimidating for daily carry.
• Closed Length: 4 inches – This compact size is ideal for discreet pocket carry. It fits comfortably without creating a bulky presence.
• Blade Material: Sandvik 14C28N – This is a high-performance stainless steel known for its excellent edge retention, corrosion resistance, and ease of sharpening. For an EDC, this is a top-tier choice that ensures reliable performance over time.
• Designer: Ken Onion – A celebrated knife designer, his involvement guarantees a focus on both aesthetics and functionality. His designs often feature smooth lines and innovative mechanisms.
• Handle Material: 410 Steel – This provides a strong and durable foundation for the handle. Combined with the DLC coating, it offers good grip and resilience.
• Handle Finish: Stainless – The underlying stainless steel provides a solid base, enhanced by the DLC coating for a matte, non-reflective appearance.
• Blade Finish: Cerakote (DLC) – This Diamond-Like Carbon coating is exceptionally hard and scratch-resistant. It also contributes to the knife’s sleek black aesthetic and can offer a slight improvement in corrosion resistance.
• Blade Shape: Modified Drop Point – This versatile shape offers a strong point for piercing and a belly ideal for slicing. It’s a great all-around blade profile for a wide range of tasks.
• Opening Method: Assisted Opening (SpeedSafe) – This technology allows for quick, one-handed deployment of the blade. It’s a key feature for an EDC knife where speed and ease of use are critical.
• Locking Mechanism: Frame Lock – A secure and reliable locking system that engages directly with the blade. It offers excellent stability during use.
• Additional Features: Lanyard Slot, Tip-Lock Slider – The lanyard slot offers an option for securing the knife, while the Tip-Lock prevents accidental blade deployment when closed. The pocket clip is also reversible for multiple carry orientations.

These specifications translate into a knife that is both practical and durable. The 3-inch Sandvik 14C28N blade is a standout feature, offering a superior cutting experience compared to lesser steels. The SpeedSafe assisted opening system is a game-changer for quick access, and the DLC coating ensures the knife looks good and performs well over the long haul. Compared to knives with basic carbon steel blades that require constant attention, or those with cumbersome manual openings, this Leek truly shines.

Performance & Functionality

The Kershaw Leek Black Assisted Folding Knife by Ken Onion excels at its primary function: cutting. The Sandvik 14C28N blade arrives razor-sharp and holds its edge admirably. I’ve used it to slice through everything from thick cardboard boxes to paracord, and it consistently makes clean, effortless cuts.

The modified drop-point blade is incredibly versatile. Its slim tip is precise enough for detailed tasks like stripping small wires or precisely cutting intricate materials, while the generous belly provides ample surface for smooth slicing through bulkier items. The assisted opening mechanism is a standout strength; it’s fast, reliable, and ambidextrous, making it accessible for both right and left-handed users.

One area where it slightly exceeds expectations for its size is its piercing capability. The slim, sharp tip, combined with the sturdy blade, allows for confident puncturing of materials without worrying about the tip bending or breaking. The frame lock is rock-solid, providing zero blade wobble, which is crucial for safety and control during demanding tasks.

Design & Ergonomics

Ken Onion’s design philosophy is evident in the Leek’s elegant and functional form. The stainless steel handle, coated with DLC, offers a comfortable and secure grip. Its slim profile makes it unobtrusive in the pocket, yet the subtle contours prevent it from feeling slippery or insecure in the hand.

The overall build quality feels exceptional for the price point. The Cerakote (DLC) finish is not only visually appealing with its matte black finish but also durable and resistant to fingerprints and smudges. The pocket clip is well-designed and securely holds the knife in place, with the option for multiple carry positions adding to its user-friendliness.

The SpeedSafe mechanism is seamlessly integrated, making one-handed deployment smooth and intuitive. There’s a slight tactile difference between using the flipper and the thumbstud, but both work exceptionally well. The Tip-Lock slider is a thoughtful addition for added safety, ensuring the blade remains closed until you intentionally open it.

Durability & Maintenance

Given its construction and materials, the Kershaw Leek Black Assisted Folding Knife by Ken Onion is built for longevity. The Sandvik 14C28N steel is inherently corrosion-resistant, and the DLC coating adds another significant layer of protection against the elements and wear. I anticipate this knife will last for many years with basic care.

Maintenance is refreshingly simple. A quick clean with a soft cloth and occasional lubrication of the pivot with a quality knife oil, like Kershaw’s own Speed Lube, is all that’s needed to keep the assisted opening mechanism functioning flawlessly. Disassembly for deep cleaning is straightforward, though the frame lock and assisted opening spring require a bit more care than a simple slip-joint.

So far, there have been no signs of premature wear. The edges remain sharp, the lock is as solid as ever, and the finish has held up remarkably well. I’ve accidentally dropped it a couple of times on my workshop floor, and it emerged completely unscathed, a testament to its robust construction.

Accessories and Customization Options

The Kershaw Leek Black Assisted Folding Knife by Ken Onion comes with a pocket clip that is reversible for tip-up or tip-down carry. This simple accessory significantly enhances the usability and carry preference for different individuals. The handle is also drilled to accept a lanyard, offering another option for securing the knife.

While this Leek model doesn’t come with a wide array of accessories, its strength lies in its well-executed core design. Customization options for this specific model are limited to personal preference regarding carry style and potentially aftermarket scales if available. However, the quality of the included clip and the thoughtful design of the handle mean that few additions are truly necessary for optimal use.

Pros and Cons of Kershaw Leek Black Assisted Folding Knife by Ken Onion

Who Should Buy Kershaw Leek Black Assisted Folding Knife by Ken Onion?

This knife is an ideal choice for individuals seeking a reliable, high-performance EDC folding knife that balances functionality with a discreet aesthetic. It’s perfect for professionals in various fields who need a dependable tool for everyday tasks, such as office workers, technicians, field service personnel, or even students who appreciate a quality blade. If you value smooth one-handed operation, excellent edge retention, and a durable, unobtrusive design, this Leek will serve you exceptionally well.

Those who prioritize a tactical appearance or require an extremely heavy-duty blade for extreme wilderness survival might consider other options. However, for general utility, everyday cutting, and a touch of refined engineering, it’s hard to beat. I would also recommend ensuring you have a quality sharpening system to maintain the razor edge, as this blade truly shines when properly cared for. A small vial of knife lubricant for the pivot is also a good idea to keep the SpeedSafe mechanism running optimally.

Conclusion on Kershaw Leek Black Assisted Folding Knife by Ken Onion

After a month of consistent use across a variety of tasks, the Kershaw Leek Black Assisted Folding Knife by Ken Onion has cemented its place as a favorite in my EDC rotation. Its blend of Sandvik 14C28N steel, the lightning-fast SpeedSafe assisted opening, and Ken Onion’s elegant design creates a tool that is both highly effective and a pleasure to carry and use. The DLC coating adds a layer of resilience and a sophisticated matte finish that has held up remarkably well.

Considering its performance, build quality, and the reputation of the designer and manufacturer, the price point of $92.79 feels justified. It offers exceptional value for those who appreciate precision engineering and reliable daily performance. I can wholeheartedly recommend this knife to anyone looking for a capable, stylish, and dependable everyday carry companion that won’t let them down. If you’re in the market for a knife that offers a superior cutting experience and seamless operation, the Kershaw Leek Black Assisted Folding Knife by Ken Onion is an excellent investment.