![]() I was amazed to read that some surgeons have actually used obsidian scalpel blades in place of stainless steel for surgery at at times.Īnd there are accounts recorded by Spanish explorers who said a well-trained Aztec warrior could cut a man nearly in half, with one of their obsidian war clubs/swords. Yeah regarding the practical size of stone based knives and edged tools, I remember visiting a museum that had a lot of ancient Egyptian, South American, and European knapped stone tools and weapons, and I got into a discussion with someone who was studying that, and he mentioned that the larger stone knives (over about 2-3 inches, such as in the greater than 3.5 and 4 inch blade range) were mostly used for ceremonial and ritual purposes that the practical (field knives and spear or arrow points) were almost always, with stone, in the 2-4 inch range.ĮvilD yes obsidian is incredible in the precise edges one can make from it. Thank you all for your great answers to this question I was wondering about. An obsidian scalpel is said to be many times sharper than a metal one. Thus, to cut obsidian, you’d need to use a strong saw. This moderate hardness places Obsidian in the same hardness level as apatite, and just below quartz and feldspar. ![]() Obsidian has a hardness of 5 Mohs, with one harder variety which is basalt glass, and it has a hardness of 6 Mohs. Obsidian being a glass is a probable- flint I'm not sure on the chemistry on.Ĭeramic materials are already machined to a high finish with current machining tech so it's possible- but as has been pointed out, short of a novelty, it's not really worth it.įlint edges work best where there were relatively small, reducing the Weibull stress probability in the material and thereby the likelihood of a further crack. West Mexicos obsidian probably began as lava oozing out of cracks in the side of. Step 3: Choose a Suitable Cutting Device. Glasses of all varieties are already polished with HF One could "chemically machine" glasses with hydroflouric acid to produce a smooth finish. ![]() Here is my question about stone knives: Instead of the "knapped" look, with facets chipped off, is it possible, using modern machining equipment, and whatever else is available, to make knife blades from obsidian, flint, and other stones, that has a smoother, more "molded" look to it, than the knapped look, or, would the nature of the stone itself make this nearly impossible, even with modern technology? On thecellular level an obsidian knife can cut between cellsrather than tear the cells as a steel knife will do. SpyderEdgeForever wrote:Many of you have seen the knapped/chipped stone knives, made by various people who are into that, as well as the original ones used world wide. When obsidian is fractured, it breaks and leaves one of the cleanest edges currently possible, a mere molecule thick When viewed under a microscope, even the. Good quality obsidian fractures down to single molecules which can produce a cutting edge 500 times sharper than the sharpest steel scalpel blade ('American Medical News', Nov. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |