PRAHRAN STORE NOW OPEN · THU–MON · 10AM–6PM

Hatsukokoro  |  SKU: HT-YROSLDCOPD-GY210KUBR

Hatsukokoro x Nigara Yorokobi SLD Copper Damascus Gyuto 210mm Birch Handle

Sale price $501.98 Regular price $589.95

Sold out right now

Leave your email and we’ll send one message the moment it’s back in stock.

One email, no marketing. Privacy policy.

Availability

  • St Peters, NSW —
    2 Bishop St, Unit 2, St Peters NSW 2044
  • Crows Nest, NSW —
    107 West St, Shop 1, Crows Nest NSW 2065
    Pickup only
  • Prahran, VIC —
    180 Commercial Road, Shop 1, Prahran VIC 3181
    Pickup only

Goes well with

Detailed Specifications
Line Hatsukokoro Yorokobi SLD Copper Damascus Kurouchi
Profile Gyuto / Chef's knife
Bevel Type Double Bevel
Weight 191 g | 6.7 oz
Edge Length 200 mm | 7 7/8″
Heel Height 51 mm | 2 1/64″
Width @ Heel 3.1 mm | 1/8″
Width @ Mid 2.8 mm | 7/64″
Width @ 1cm from Tip 0.6 mm | 1/32″
Steel SLD | Semi-stainless
Blade Construction Sanmai - Stainless Damascus Clad
Typical hardness 62 to 64 HRC
Surface Finish Kurouchi
Handle Octagonal Birch Burl with Spacer
Region Hyogo
Best for
  • Enthusiasts
  • Collectors

Free shipping for knives over AU$200 Australia wide.

World-wide shipping via DHL Express, 3 to 6 days (not available in the UK).



Forged and sharpened by Nigara, the Yorokobi(よろこび) offers a unique copper damascus cladding with the much loved SLD steel. This combination is specially developed by Hatsukokoro, combining excellent artistic with the great performance.

Compared with its previous iteration, the Yorokobi(joy in Japanese) Kurouchi line doesn't fall short in its artistic appearance, in my opinion, Hatsukokoro's artistic approach on this line is more curated and thoughtful. Instead letting the copper damascus spread across the blade, the pattern is restricted in the area right above the cladding line, moving up along the bevel is another layer of stainless cladding, then the bevel finishes off into the Kurouchi surface. The layering of different material and their contrast make creates waves of pattern, emerging from the Kurouchi finish, flow down the bevel into the cutting edge, there is almost a sense of motion in it. This setup is rather complex but doesn't look busy, demonstrate a high level of artistic skill.

Complementing this beautiful finish is the SLD core steel, with similar composition to the SKD steel but less chromium, this tool steel can be heat treated to 63-64HRC and hold a thin edge for a extensive amount of time. Having about 12% chromium (Proterial) will make it a really rust resistant cold work die steel, but on this line the core steel have been put through a chemical etching, which gives it a dark colour and some resistance to rusting and discolouration.

This is a line made for those who fancy the passionate vibe that a copper damascus blade can give you, but don't want have that beauty shouting out loud. The dense orange pattern still emits a strong presence which is hard to miss, but it is well balanced and kept more subtle by the Kurouchi finish that takes up half of the blade. Remember that the copper and the core steel are both reactive to moisture and fingerprints, but if you keep them well looked after, knives from this Yorokobi like can keep bring you joy will its unique beauty.

Pros Cons
  • Great artistic
  • Highly collectable
  • Excellent fit and finish
  • Need extra care
  • Semi-stainless can rust
Care Instruction
  1. Don't cut hard things! Japanese knives are brittle so bone hacking is a NO NO!
  2. Wash with neutral detergent after use, and wipe dry;
  3. Please don't wash knife with dishwasher, it will damage the wood handle;
  4. Be careful not to leave the knife close to a heat source for a long time;
  5. It is a lot more dangerous to cut with a blunt knife than a sharp knife!
  6. It is best to sharpen a Japanese knife regularly on a waterstone.
  7. Semi-stainless steel won't rust easily but may still patina

Hatsukokoro

Hatsukokoro, a knife brand from Amagasaki

Hatsukokoro (初心) is a knife brand from Amagasaki, Hyogo, launched in 2019. It is a brand rather than a forge: it works with knife makers instead of forging itself.

The name comes from the proverb 初心忘るべからず, roughly never forget your beginner's mind. For the same characters the brand chose the gentler reading hatsukokoro over shoshin.

The brand's own catalogue names the place behind some of its lines, and the maker behind a few: Shinkiro comes from Fukushima, and Hayabusa HAP40, Saihyo and Sunaarashi from Seki City, while for others the maker or the place stays private. Some of our listing titles also carry the maker alongside the brand, such as Hatsukokoro x Yoshikane and the Hatsukokoro x Yoshihiro Yauji collaboration.

The Hatsukokoro lines we list include both carbon and stainless steels. Our listings include Hayabusa in SG2 and Aogami Super, Saihyo in SG2 and Ginrei in Ginsan. Carbon steel kurouchi lines include Aosagi, Aokitae, Kurokaze and Kurogane.

“A knife brand from Amagasaki that works with knife makers rather than forging.”

Est. 2019 | 令和元年
Known for Lines made with partner makers, from Seki City to Fukushima
Website handk.co Instagram @handk_official Read more about Hatsukokoro

Hatsukokoro · Hyogo

Knife details

Gyuto — knife profile
Profile

Gyuto

牛刀

Chef's knife · Double bevel

Double-bevel all-purpose chef's knife with a pointed tip; thinner than a Western one.

Read more
Steel properties
  1. Hardness Good
  2. Edge retention Good
  3. Toughness Fair
  4. Rust resistance Fair
  5. Ease of sharpening Fair
  6. Sharpness Fair

Our ratings, inferred from published lab tests and composition.

Steel

SLD

SLD鋼

Semi-stainless · Hitachi Metals (now Proterial)

Proterial cold work die steel near D2: 1.5% carbon, 12% chromium, hardening hardness over 58 HRC. Good edge life.

Read more
CladdingCoreClad line
Construction

Sanmai - Stainless Damascus Clad

三枚ダマスカス

3 layers · damascus clad

Hard core between stainless damascus layers, bare at the edge. Thinning wears the pattern.

Read more
Kurouchi — blade surface finish
Finish

Kurouchi

Black forge scale

Dark forge scale left on the upper blade. The bevel and edge still need care.

Read more
Octagonal Birch Burl with Spacer handle
Handle

Octagonal Birch Burl with Spacer

Octagonal WA

Stabilised birch burl, eight-sided, with a spacer. Resin-stabilised wood resists water.

Frequently asked questions

Gyuto or santoku: which should I choose?

The gyuto came to Japan with the beef-eating culture of the Meiji era, and that is where its name comes from. Tojiro says it is used for all kinds of cooking, which is why it is also called the chef's knife.

The santoku is a household knife that combines the good points of the nakiri and the gyuto. Tojiro describes it as all-purpose, from vegetables to meat and fish, double-bevel and built on the same construction as a Western knife.

Choose a gyuto if you want more length and reach. Choose a santoku if you want a shorter all-purpose knife. Tojiro's own size figures: gyuto 150 to 210mm for household use and up to 360mm for professional use, santoku 165 to 170mm for household use.

What is a gyuto knife used for?

The gyuto (牛刀) is a chef's knife for all kinds of cooking, and it is basically double-bevel. A knife maker's guide says it came to Japan in the Meiji era with the culture of eating beef, which gave it its name, but it does not cut only meat.

A Japanese dictionary describes the gyuto as slimmer than a santoku, with a pointed tip, used widely for meat, fish and vegetables.

What gyuto length should I choose?

A knife maker's guide lists 150 to 210 mm, double-bevel, for home use, and 180 to 360 mm, single- or double-bevel, for professional kitchens.

We suggest starting with a 210 mm gyuto for a home kitchen, and stepping up to 240 mm if you regularly cut large pieces and have the board for it.

240mm vs 210mm gyuto: which size should I choose?

Get the 210mm. We only point people to a 240mm when they have about 45cm of usable board, cook in volume, and regularly break down big roasts or whole fish.

On the gyutos we've measured for our product pages, the extra length is real. As of October 2026, the 210mm gyutos we list have a median edge of 213mm from heel to tip, across the 111 we have measured; the 240mm ones have a median of 240mm, across 100. The 240s are also heavier, 212g against 175g at the median, and a touch taller at the heel, 50mm against 48mm, across the same 100 and 111 knives.

Weight overlaps between the two sizes. As of October 2026, 11 of the 100 measured 240s weigh less than the median 210 at 175g. The 240s we measured weigh 146 to 323g, and the 111 measured 210s 121 to 255g. The number in the name does not decide how heavy a knife is, so check the measured weight on the product page.

Japanese or German kitchen knives: which should I buy?

These are two design families, not a national specification, and many modern knives mix both. Japanese profiles are typically thinner, so they suit push and pull cuts; German profiles carry a fuller belly, which suits rocking. A given knife is its own evidence, so look at the blade you would buy rather than the country label.

Edges follow the same pattern. Many German knives ship at about 15 degrees per side, while many Japanese knives run about 10 to 15; check the model you are buying. A smaller angle is sharper but less forgiving. Hardness is a per model figure too. On two common Japanese steels the steel makers' own figures start at 60 HRC: Takefu Special Steel rates VG10 at 60 HRC or more, and Proterial lists the hardening hardness of Aogami 2 (Blue 2) as over 60 HRC.

A Japanese knife suits precision work where a sharp edge and nimble handling matter; a German knife suits heavier prep and rocking cuts where a substantial feel and a more forgiving edge matter. Whichever you choose, keep the edge off bone, frozen food and very hard squash, and use a wooden or plastic board.

What is the flat spot on a knife, and is it the same as the "sweet spot"?

The flat spot is the straight run of edge from the heel towards the middle, the part that meets the board along its length. It is commonly known as the sweet spot; some people also use "sweet spot" for the balance point, so ask which one someone means.

Past the flat, the edge curves up towards the tip (the belly), which suits a swinging or pulling stroke. Sharpeners also say "flat spot" for a worn patch of edge, so when you mean the shape, "the flat part of the edge" is clearer.

Gyuto or chef's knife: what is the difference?

A gyuto is a chef's knife, and its shape is largely modelled on the French chef's knife: a fairly flat run of edge near the heel, then a curve up to the tip. A German-style chef's knife has a bigger belly and curves along much more of its edge.

The flat run suits push and pull cuts, and the belly is made for rocking. That flat run is commonly known as the sweet spot.

Is SLD the same steel as SKD11 and D2?

Close. Proterial, which makes SLD, lists AISI D2, DIN X153CrMoV12 and JIS SKD11 as its equivalent standards, while its own typical figures include 12% chromium and 1.5% carbon.

Proterial makes SLD as a cold work die steel with high abrasion resistance, for uses such as cold press dies, shear blades and gauges.

You May Also Like