Seeing the process of making the sword at home uncle. My uncle works as a sword-making artist from scrap metal, making this sword requires a very thorough process with a very high degree of accuracy. For that the uncle is his hero. Starting from the selection of materials until the manufacturing process is done with the stages that have been determined. The sword material ever made by the best uncle is the Tamahagane sword. Tamahagane's sword is a sword chosen from iron ore with a very thorough process. Uncle made a high-quality blade sword done within a period of not less than 1 month.
As with other works of art, the sword-craftsmen like my uncle exert all their soul and skill in the process of making it look good and artful.
To make your uncle's sword requires only strong steel. See some scrap iron that is uncle by being a high-value sword.
The iron is further heated at very high temperatures, this tamahagane sword should not reach the liquid form, in order for the amount of carbon to react with precisely perforated steel and the right carbon percentage in this tamahagane sword. Then this sword will vary (between 0.5 to 1.5%). Swordsman like my uncle uses two types of tamahagane, the first of which is high carbon, and also very hard, and my uncle's Tamahagane sword is sharply razor-shaped.
After the sword is heated and the sword is hit with hard steel to form the cylinder, after which the uncle uses a sharpener to make the sword sharper. Look at the process as shown below.
The difference in speed and the level of contraction that fits between these two types of tamahagane swords, causing the sword to warp and create a distinctive and special curve shape. This stage is a bit difficult, because one of the three swords will fail at this stage.
This semi-finished sword will then be given a very good handle.