![]() ![]() ![]() For example, if you do it at the exact top you might end up with a few molecules’ width. Josh, maybe I should better ask this question at the guy of Science of Sharp (sorry, forgot his name), but how can you exactly measure the width of an apex? I.e. Where they show amateurish SEM images of their product vs the competition and where the steel scalpel is coated with teflon, so you can’t even see the apex. Your image reminds me of another BS marketing photo from Diamond microtomes are very keen, but the bevel angle is too high to cut anything but thin, flexible sections, and if the bevel angle were lower, they would be even more fragile than they already are. I can make a carbon steel straight razor sharper than a diamond microtome or obsidian scalpel, but the question is whether it will perform better for a particular application. What is more important is whether the blade can make the cut without being chipped or folded. The “crystalline elements” – carbide dimensions and grain size are much larger than the edge width of a straight razor or surgical scalpel. The edges are not sharpened, they are made using fracture lines. That’s how fine we’re talking when it comes to the obsidian and diamond knives. The diamond knives of ultramicrotomy are used to create 2000 radial cross sections of a single hair, or 100 cross sections of a single red blood cell. It’s basically the works of ultramicrotomy starting to bridge into surgery. Without getting too much further into it, you’re also looking at the crystalline structure of the elements evolved beyond the sharpening when it comes to the obsidian vs steel argument.
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