Tamahagane is a steel made by iron sand , the sand was smelted in the clay tub furnace in a old traditional way , the main iron chunk can separate two types of iron , which is high carbon steel and low carbon steel , the high carbon steel is the material of making skin steel , and the low carbon steel can be use to make the core steel , after remove all the Impurities and slag through the forging folding process , cover the core steel with skin steel and make it become a iron stick , and shape it to a sword form. A well heat treat and well shaped and good grind can make a elegant pattern and white hamon. The sword made by Tamahagane provide a great artistry andfunctionality for the collectors , the hardest parts of skin steel makes the edge sharp , and the soft part of core steel provide toughness , gives the swords a great shock resistance.