Nakiri 170mm Cru-Core GoMai (0.95C) Copper & 15N20 Cladding


From Australian blacksmith Jazz Heywood aka Oblivion Blades a 170mm Nakiri. Constantly, pushing the boundaries, creating some of the most iconic and unique kitchen knives around. All of Jezz's blades feature his own, in house laminated steel. This one features his very own "CruCore" steel at the core. The steel is a crucible steel with a measured carbon content of .95 (C). Layered up in a GoMai construction with copper and 15n20 cladding.

The handle, a textured OB composite with exposed pine and copper fittings. The blade comes with a leather sheath with "Laminated" branding imprint. Yet another example of Jazz's incredibly unique and innovative work. As always the this kitchen knife features a very premium fit and finish and a high performance convex grind.

Beautifully thin and sharp at the edge and with fantastic balance.

Product Specification

Blade Type: Nakiri

Edge Length: 170mm

Spine Heel: 3.79mm

Spine Mid: 2.8mm

Spine Tip (20mm before): 2.75mm

Blade Height: 51mm

Weight: 257g

Cutting Edge Steel: Crucible Steel (Wootz, Bulat, etc)

Stainless: No

HRC: 66

Blade Construction: 5 Layer (Go Mai)

Blade Finish: Satin Polish and Brute de Forge

Grind: Convex

Handle Construction: Hidden Tang

Handle Materials: OB Composite, Pine, Copper

Handedness: Ambidextrous

Saya Included: Yes

Shipping & Returns


We process orders 5 days a week (Monday - Friday) and ship from our shop in Berlin, Germany. We ship with FedEx, UPS and Deutsche Post.

We are happy to offer free international shipping on a variety of orders depending on location and order value. You can check to see where things sit for you here.


At Modern Cooking we want our customers to be inspired and delighted by the products they purchase through our shop.

However, we understand that you may need to return products occasionally. If you are not entirely happy, you can return your purchase in its original condition within 14 days for a refund. Please email if you wish to return any goods.

In the unlikely event that you receive faulty goods or your order is damaged in transit, please contact us for instructions on how to return the goods as in this case we will meet the cost of return postage, though only if this is arranged through our authorised carriers. Any claim for refund or exchange resulting from faulty goods or goods damaged in transit must be raised within 5 business days.

All Modern Cooking logistics partners provide insurance in case of damage, but the coverage is only valid if we are notified within 5 business days. Please make sure to inspect your order immediately upon receipt to ensure that there is no damage.

Once we have the goods back, we will issue a full refund or send replacements where possible, as you prefer.

Product Care:

Cleaning: Clean by hand with warm water. Avoid wetting the handle when possible. 

Sharpening: We advise using whetstones to sharpen your knives and a honing rod or steel to maintain the burr between sharpening sessions. 

Reactive Steels: Reactive steels like Aogami Super, Apex Ultra or one of the many premium reactive German and Swedish steels are susceptible to rust if not properly cared for. In this case we advise that you keep the knife dry between uses and when storing the knife for longer periods wiping the knife blade with Tsubaki oil or another food safe oil is a wise choice. This will not stop a patina forming on the blade, but it will stop rust. A patina can be a beautiful personal feature on your knife and helps to stop rust forming. So, dry your knife regularly between uses, store in a dry place and apply some Tsubaki oil from time to time when storing for long periods. 

A reference guide to steel types

Handle Care: If you have a knife with a non-stabilised wooden handle, you can apply Tsubaki oil or another food safe oil to your handle from time to time. Food safe wax can be applied to both stabilised and no-stabilised wooden handles. Never apply hot wax or oil as you risk warping or damaging the handle.