Full-tang construction means the steel of the blade body continues uninterrupted through the entire length of the nakago - the same material that forms the cutting edge runs through the 9.5-inch tang that the tsuka will eventually enclose. There is no weld, no junction, no reduction in cross-section where blade meets handle. On a tamahagane blade, that continuity matters because the material itself is already the product of a carefully managed composition gradient: adding a joint in the structural chain would undermine what the forging process established.
This blade runs 28.3 inches from tip to habaki-moto, 37.8 inches total. The 9.5-inch nakago is the full-tang section that will sit inside the assembled handle. It arrives without pre-drilled mekugi-ana. Placement depends on the tsuka dimensions and fittings the assembler has chosen, so drilling is left to the buyer. The nakago's black-rust patina is preserved intact, protecting the bare steel and serving as the forging date-marker Japanese sword specialists read over time.
The tamahagane steel is produced in a tatara furnace - iron sand and charcoal smelted into layered ore sorted by carbon content, folded, and worked for centuries. High-carbon pieces form the hard cutting edge; low-carbon material encases it. Across the blade surface, jihada - the grain pattern from folding - is visible, distinct to tamahagane as a material. Along the edge runs the hamon: the crystalline differential-hardening line from clay tempering, its specific form unique to this forging.
At 1.76 lbs across 37.8 inches, the weight and sori (0.75-inch curvature) are consistent with standard katana proportions. Free shipping, 30-day money-back guarantee.
- 28.3-inch tamahagane blade with 9.5-inch full tang - same steel runs uninterrupted from tip to nakago end.
- Real folded hamon from clay tempering: the crystalline edge line unique to each individual forging.
- Jihada surface grain across the flat - the folded steel pattern readable on a finished tamahagane blade.
- Full tang with no pre-drilled holes; the assembler drills mekugi-ana to their own tsuka specification.
- Black-rust nakago patina preserved - the century-tested protection built into Japanese blade construction.
- 37.8 inches overall, 1.26-inch width, 0.75-inch sori, 1.76 lbs - standard katana proportions throughout.
Specification
| Item Number | TK-JP-G10463 |
| Primary Color | Steel |
| Primary Material | Tamahagane Steel |
