Step 2) Sword making
Tanren / tempering
The iron pieces, still piled onto spatula, are then heated in the fire. The iron is repeatedly heated and pounded until the desired degree of steel is obtained. This process determines the quality of iron. pounded with the help of lye (an alkaline solution, often used for washing or cleansing), the iron becomes purer and stronger, turning to steel.
Shingane & Hi-zukuri / forming
Two separate pieces ofRead More