There's always the mayhem about the Japanese katana to the point that it's exaggerated. After doing some research, Understanding the Japanese katana would at least help consider some of the misconceptions about the sword itself. The process of steel folding There is the myth that the folding the steel took up to a million times. That statement really made me go, "HUH?!" because I guess that's just pretty impossible. Folding of steel happened during the manufacturing process was because of lower quality steel back then. To make quality steel out of what was available, iron sand was purified for 72 hours straight to get rid of the slag and later, the tamahagane had uneven carbon content. It required heating and breaking to find which ones where harder steel (kawagane) and softer steel (shingane). The kawagane are all stacked together, they are covered in Japanese paper, muddy clay water and straw ash to help even out the carbon. The process of folding is done. ...
Some of my random thoughts from a hyperactive mind!