Jihada and jigane-"folded steel katana"
The steel (jigane) on the surface of a Japanese sword has a definite color and texture, and since the steel has a very dark appearance, it requires a good grind to bring out the details. Examining a well-made and ground Japanese sword usually reveals a clear color and fine texture. In addition, it is common to observe the distinctive surface pattern created by repeated folding during the forging process, called jihada, which varies from sword to sword depending on the method of steel making and the steel used by the sword maker for a particular sword.
Continue Reading