What are the different blade geometry types available in tanto swords?
Updated Feb 2026
Tanto swords come in several distinct blade geometries, each with different visual and handling characteristics. Hira-zukuri is the simplest and most common tanto geometry - a flat-ground blade with no ridge line, the cutting edge and the back meeting at a single angle along the full blade length. This produces a clean, wedge-shaped cross section that is easy to produce consistently and reads as elegant in display. Shobu-zukuri adds a ridge line partway up the blade, creating a distinct visual division between the flat of the blade and the beveled edge section. Kanmuri-otoshi is a variation where the ridge line appears only near the point section, creating a specific geometry at the tip. Kissaki-moroha-zukuri produces a double-edged point section, with both a primary edge along the full blade and a secondary back edge in the final quarter of the blade. Each geometry produces a different silhouette and a different experience when examining the blade up close - the variety of tanto geometry is one of the primary reasons tanto collecting is as specialized a pursuit as katana collecting.