Polishing the japanese sword
A traditional Japanese sword is not complete because the blade has been forged, the metal has cooled, and the soil has been removed. Polishing is a key step to complete a sword.
You might think that polishing Japanese swords is a quick and simple process that can be done in just a few minutes. However, it is not. In most cases, polishing takes longer than the actual forged blade. A typical polishing job takes about 2 to 3 weeks. This is a time-consuming and methodical process.
Improper polishing will damage the blade. Polishing the sword can help improve the sharpness and beauty of the sword. However, improper polishing can have a serious impact on the sword, and may even damage or destroy it. If you changes the geometry of the blade and/or wears the steel excessively, it will destroy the function and value of the sword.
One of the processes for polishing traditional Japanese swords is glazing, which involves the use of fine-grained polished stones to achieve a mirror finish on the blade. However, for the blunt blade of the sword, a matte effect is sought to make Harmon more obvious and attractive.
A carefully polished Japanese sword can reveal various information about its manufacturing method. For example, it reveals the speed at which the cutting edge cools; what is the temperature at which the blade cools? Even the carbon content of the steel itself. Of course, these findings are only visible in well-polished blades. If the blade is not polished or poorly polished, these features cannot be identified.
Once the sword has been completely polished, any trading volume of oil must be removed. Even a small amount can damage the blade by promoting rust and corrosion. The salt in the polishing oil provides an ideal breeding ground for mold and mildew, which in turn can lead to corrosion.