The polishing technology and its genealogy of weapon-shaped bronzes: an elucidation of the polish pattern of the blade.

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The following matters became clear. The polish pattern could be classified into six types by Kenmidani and Metabaru findings. In process of the polish pattern manufacture, two style of manufacture existed. One of them was the highly managed manufacture style, the other was the loosely managed manufacture style. Manufacture management of each process of casting, grinding for adjusting and polishing for making a pattern was carried out by a series. There was the design basic policy of the polish pattern. The whetstone in which a grain was smaller than #2000 in JIS was presumed as a polishing tool with the highest Possibility. Between the narrow polish pattern and the wide one, direct genealogical relationship was not able to find out.