65Mn Manganese Steel Nodachi with Half-Tachi Mounts

Specifications

Blade Length: 90 cm

Handle Length: 35 cm

Blade Width: 2.6 cm at the tip, 3.2 cm at the base

Thickness: 4 mm at the tip, 7 mm at the base

Overall Length (unsheathed): 128 cm

Overall Length (with sheath): 131 cm

Weight (unsheathed): approx. 1373 g

Balance Point: 19 cm from the guard

Tang Width: 2.6 cm

Material & Craftsmanship

65Mn Steel (high-quality spring steel)

Oil-quenched & tempered, hardness approx. HRC 55

80–90° flex rating, excellent toughness

Machine-polished mirror finish, without yokote

High-strength zinc alloy fittings, specially cast for durability and low-temperature resistance

Black stone-texture lacquered saya with faux ray skin

Leather-wrapped handle with professional sageo

Dual POM mekugi pins for enhanced structural safety

Product Description

In traditional Japanese sword classification, blades under 30 cm are Tanto, 30–60 cm are Wakizashi, 60–90 cm are Katana, and anything over 90 cm is considered a Nodachi (野太刀).
With a 90 cm blade, this sword sits at the threshold of the Nodachi category—long, powerful, and visually imposing.

This project took several months of mold development and preparation. The fittings are custom-made half-tachi style mounts, not the typical generic parts found on mass-produced swords. Standard zinc alloy wasn’t strong enough, so we upgraded to a high-strength, cold-resistant zinc alloy for superior durability.

The blade is real 65Mn manganese steel, fully heat-treated for proper hardness and resilience. The handle and scabbard are made to measure, hand-fitted to the blade and mounts with tight tolerances—no universal sizing, no forced fit.

The result is a long sword with clean craftsmanship, solid construction, balanced proportions, and a commanding presence. Reliable, sturdy, and visually striking—this Nodachi is built to impress from every angle.