How does clay tempering affect a Bleach replica sword's appearance?

 Updated Feb 2026

Clay tempering is a heat-treatment process where a layer of refractory clay is applied unevenly along the blade before the final quench. The exposed edge cools faster, creating a harder surface, while the spine cools slowly and remains more flexible. The boundary between these two zones becomes visible as a hamon — a wavy or cloudy line running along the length of the blade. On the Sode no Shirayuki replica in this collection, the hamon adds a subtle but unmistakable visual detail that elevates it beyond standard anime-inspired pieces. For collectors who appreciate metallurgical authenticity, this is one of the most meaningful differentiators between a quality replica and a purely decorative item.

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