Ink Blossom – Hand Forged 1065 Carbon Steel Katana Sword
The Ink Blossom stands apart on its specifications sheet through two features that are visible the moment the blade clears the saya: a smoke-grey iron fitting set with gold detailing (烟熏灰铁装描金 – literally “smoke-grey iron fittings with gold tracing”) and a dual-grooved blade (双槽 – two parallel bo-hi grooves running the length of the flat). The combination of matte-dark hardware and gold trace against a 1065 high carbon blade is not an accident of design – it is the point.
Specifications
| Blade Steel | 1065 High Carbon Steel |
| Total Length | 102.0 cm / 40.2 in |
| Blade Length | 72.0 cm / 28.3 in |
| Blade Width | 3.2 cm |
| Weight | 1040 g / 36.7 oz |
| Heat Treatment | Salt-Bath Constant-Temperature Hardening (马沸炉 恒温热处理) |
| Fittings | Iron (Smoke-Grey, Gold Detail) |
| Handle | Cotton Ito + Genuine Rayskin |
| Sheath | Hardwood, High-Gloss Lacquer |
What the Steel Does
The 1065 carbon steel here undergoes 马沸炉 恒温热处理 – constant-temperature salt-bath heat treatment. The salt-bath medium conducts heat into the blade far more evenly than open-air furnace methods, producing a consistent hardness profile along the full length of the blade rather than a gradient that leaves the mid-section softer than the tip. For a practitioner, this matters: edge geometry holds predictably across the entire cutting surface, not just at the kissaki (tip).
The dual-groove (双槽) configuration is carved directly into the shinogi-zukuri (ridgeline) blade. Two parallel grooves running the flat reduce material from the non-structural sections of the blade geometry, and the audible sound they produce during a cut is a recognized feedback signal for practitioners assessing technique. The grooves are finished cleanly – no rough edges or inconsistent depth.
The Feel of It
The tsuka (handle) runs 26 cm on a genuine rayskin foundation, wrapped in cotton ito with a traditional diamond pattern. Cotton ito has less give than silk, which translates to a firmer mechanical connection between hand and tang – a quality that registers clearly when the blade makes contact. The smoke-grey iron tsuba (guard) sits flush with no lateral play, and the draw from the high-gloss lacquered saya is consistent across the full length of the blade. The gold detailing on the fittings does not affect grip or function; it reads as a deliberate accent against the darker hardware without competing with the blade finish.
Maintenance Notes
Wipe the blade clean after every session and apply choji oil (traditional clove-based sword oil) in a thin, even coat before storage. The gold detailing on the iron fittings should be cleaned gently with a dry cloth only – avoid oil contact on the decorative surfaces. Store in a dry environment with the blade seated fully in the saya.

























