Korben Bloomfield

United Kingdom · High Performance, Handcrafted Kitchen Knives

Korben Bloomfield

KWB Knives

Korben Bloomfield of KWB Knives has built a reputation around disciplined craftsmanship, controlled geometry, and an uncompromising focus on fundamentals. Working from Kent, he approaches forging, heat treatment, and finishing with a strong emphasis on structural integrity and long-term performance rather than decorative excess. The result is a collection of highly refined handmade knives that feel honest, capable, and confidently understated.

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The latest from KWB Knives

Recent work

Recent releases from this workshop. Each made by hand in extremely limited numbers.

About the maker

On the workshop

Korben Bloomfield is a British bladesmith working from a family-run workshop in Newchurch, Kent, under the KWB Knives name. His route into the craft was self-taught and methodical, beginning in 2015 with an obsession for fundamentals — forge welding, heat treatment and the structural integrity that separates an attractive knife from a genuinely capable one. By 2017 he had committed to bladesmithing full time. Years spent experimenting across formats, from razors to long blades, have given him an unusually broad technical base, which now feeds directly into his focus on kitchen cutlery.

His philosophy is straightforward and consistently applied: performance leads, and no material, however striking, should be used to disguise inferior craftsmanship. That principle shapes every stage of the build. KWB knives are defined by controlled geometry, clean execution and the quiet confidence that comes from iteration rather than improvisation. Steel selection is treated as a structural decision, not a marketing one, and heat treatment is approached as the foundation of edge stability and toughness. The result is work with real material integrity, where the visible surface of the knife is honest about what lies beneath.

What gives Korben's work its character is the borderline-perfectionist refinement of each piece. Knives are tested, adjusted and refined until they meet a standard he is willing to put his name to, and that discipline shows in the resolution of the spine, choil and handle transitions. The aesthetic is composed and understated, with the kind of workshop character that rewards close inspection. For Modern Cooking, KWB Knives represents a rising and unmistakably maker-led voice in contemporary British bladesmithing, the work of a young smith building honest, high-performance kitchen knives intended to last.

Steel preference

Signature construction

Cutting edge steel

Apex Ultra

Low-alloy fine-grain carbon tool steel

Typical HRC
64–68
Corrosion class
Carbon
Production
Conventional
Origin
Austria (ApexUltra project — developed by Larrin Thomas, Marco Guldimann and Tobias Hangler; FFG-funded, associated with Messerschmiede Hangler)

Apex Ultra is one of the most carefully engineered non-stainless kitchen knife steels in modern circulation — a steel designed from the ground up specifically for handmade knives, rather than borrowed from another industry. It was developed by metallurgist Larrin Thomas together with smiths Marco Guldimann and Tobias Hangler. It is a low-alloy carbon steel — roughly 1.25 percent carbon, 2.6 percent tungsten, 1.5 percent chromium and a 0.4 percent vanadium addition, with manganese and silicon kept low. That composition is tuned for high purity and a fine, evenly distributed mix of chromium-enriched iron carbides, tungsten carbides and vanadium carbides — the structure that lets it hold a very hard edge without the coarse carbides or plate martensite that sap toughness in other high-hardness carbon steels.

What this means for a cook is unusual permission. Apex Ultra carries very high toughness in the 66+ HRC range — the highest of any knife steel its developers have tested at that hardness — so you can ask a maker to grind it thin and run the heat treatment hard, and the edge will hold far longer than the carbon steels smiths usually forge, without microchipping. It forges and forge-welds much like 52100 or 1.2562, sharpens cleanly on natural and synthetic stones without needing diamond plates, and its modest chromium slows patina a little — though it is not stainless and should be cared for as a carbon steel.

Apex Ultra has become a signature steel of the European maker community, and the Modern Cooking catalogue carries an unusually deep bench of smiths working in it. Tobias Hangler himself heads that group, alongside Marco Guldimann, Benjamin Kamon, Martin Huber, Jonas Johnsson, Karol Karyś, Birch & Bevel, and MCx. It is genuinely a step forward — one of the relatively few cases where the marketing claims and the underlying metallurgical data are saying the same thing.

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Blade construction

Laminated Steel

A category covering knives built from multiple layers of different steels forge-welded together. The hard cutting steel is sandwiched between softer outer layers (cladding) that protect the core, add toughness, and often contribute visual contrast.

The most common laminated constructions in the Modern Cooking catalogue are:

SanMai (三枚) — three layers: hard cutting steel in the centre, softer cladding on both sides. The traditional and most common form.

GoMai (五枚) — five layers: a hard core, two intermediate layers, and two outer layers. Adds visual depth and structural complexity.

KuMai (九枚) — nine layers: similar logic, with more cladding layers for additional pattern and structural variation.

GoMai and KuMai are often chosen not only for the additional layers and visual depth, but also because the intermediate layers can act as a nickel diffusion barrier — limiting carbon migration out of the core into the cladding during forge welding, and protecting the core's intended carbon content through the heat of the forging process.

In all cases the cutting performance is determined by the core steel; the outer layers are cosmetic and structural. The lamination contributes corrosion protection (when a stainless jacket clads a carbon core), reduced reactivity, and the visible boundary between core and cladding that gives the knife its character.

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Limited release

Reserve your place

Korben Bloomfield's work is highly sought-after for its distinctive combination of craftsmanship, performance, and design, with each piece produced by hand in extremely limited numbers — a pace of production that naturally cannot keep up with demand.

For those hoping to secure a piece through Modern Cooking, joining the waitlist is the best way to register your interest in Korben's work and share your preferred dimensions, design preferences, and intended use. As opportunities become available, we use this information to guide future allocations with care and consideration.

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