What is the correct name for one of the most mysterious elements of the design of cold weapons - "blood flow" or "bloodstream"? The irony is that the design element of the knife, which is meant by the above words, is really correctly called dol. And it is not needed at all for what one could think of based on mythologized terms. Let's figure it out in order, as simply and intelligibly as possible.
Look at any edged weapons not from their "land of elves", but from real history. It usually has a very simple blade design. Of course, the blade can be decorated with engraving or even gilding, the handle or guard can have various "fintiflyushki" for show-off, however, in general, edged weapons are a celebration of utility and you just. Except, perhaps, for the rare ritual blades.
From the point of view of functionality, all edged weapons should cut, stab, or simply cut. Or do it all at once. Deadly simplicity and efficiency in every sense. On most blades, you will not find any spikes, squiggles or other contrived elements there. This is because they are simply not needed. After all, if you pierce a person with a 30-centimeter sharp "steel stick", then only from this very fact he will become worse just so much that no mythical "blood flow" for better drainage of blood from the wound required.
Actually, the first myth about the share on the blade is connected with this. Like, it is needed to aggravate the injury. In fact, this is not the case. The dol has never had and never will have such a functional purpose. Why? For the reason described above. The very fact of being hit, cut, pierced with a "steel stick" is extremely destructive for an unprotected organism.
The second myth about the share is “professional”. And it boils down to what is needed supposedly to improve the strength characteristics of weapons on the basis of the I-beam principle. This is already much closer to the truth, but it is also a lie. In fact, any fulcrum on the blade, on the contrary, reduces the strength of the blade. Why is it done then? The answer is simple - the real benefits of a properly made gutter outweigh the few disadvantages.
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So dol will slightly reduce the strength and stiffness of the blade design. However, in return, he offers a reduction in the mass of the blade, it can improve its balance, and most importantly, it allows you to save precious material without significantly losing the quality of the weapon. In addition, the dol on the blade is also very beautiful.
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Initially, blacksmiths began to make dol in the Middle Ages with swords. The technological solution was dictated primarily by the high cost of iron. Until the 13th century, its extraction was difficult and time-consuming. After the collapse of the Roman Empire in the 5th century and the departure from the slave formation, Europe for a long time could not catch up with the volumes of extraction and production of this material. In addition, blacksmiths constantly tried to lighten weapons, since even a strong and experienced warrior would not have enough health to handle an overly heavy sword (more than 1.5 kg).
If you want to know even more interesting things, then you should read about what constitutes riveted-sewn scales - unique Russian armor for heroes.
A source: https://novate.ru/blogs/140320/53788/