The kama was a tool used to cut weeds and bring in
the crop. It was a very simple but very sharp and potentially deadly weapon.
Its structure however made it very weak when attacked with heavy blows directly
to the blade. Therefore, there has been a redesign of the weapon, which is
called natagama. It is stronger in its construction, because the blade
runs through past the curve of the normal kama and all the way down into the
handle. This makes the cutting edge bigger, and above all, the previous weak
point where the sickle was attached to the stick has disappeared.
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