![]() Of course, it was necessary for the hamon line to reach a sufficient height so that it was maintained at least at a minimum height along the entire length of the blade. If the blade underwent several major repairs, such as the removal of teeth after combat (hakobore), it happened that the hamachi disappeared completely and the blade line transitioned smoothly into the nakago. With use, the wear on the blade was much more pronounced than on the spine. The hamachi is often considerably lower than the munemachi, even though they are the same height on a newly made sword. it is clearly visible here how the restoration of the blade resulted in lowering of both settings. This dimension is good to observe in antique blades. The height of the hamachi and monemachi mount is approx. These dimensions are for commonly made swords at the upper maximum. 76 cm, motohaba 34 mm, sakihaba 25-27 mm, motokassane 8 mm, sakikassane 6-7 mm. Some swordmakers, for example, make blades that have the same kassane along the entire length.Īt present I usually make blades with the following dimensions. The blade therefore narrows towards the tip by about 30%.This rule is not a dogma. This applies to both dimensions, width and thickness (kassane). For the ratio between the dimensions at the tip and the fit in front of the nakago, the approximate rule is 70% at the tip to 100% machi. In the area in front of the tip (kissaki), the dimension between the back (mune) and the blade (ha) is sakihaba and the blade thickness is sakikassane. The width at the tang (nakago) between the tips of the blade fit (hamachi) and the spine fit (munemachi) is called motohaba, and the thickness is called motokassane. ![]() The description is therefore rather indicative. Here, there are considerable differences in shape, which were influenced by the way the sword was used. ![]() Certainly the type of blade (historical period) must also be taken into account. It is probably impossible to describe with millimetre precision what the dimensions of the newly made sword should be.
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