Randomness thread

Z zaedion

Mister, I have a complaint.
Why don’t I see your thoughts on the reverse grip for Tyrant, a photo of a punching bag, and random thoughts about broken firewood in this thread?
I was writing posts, and honestly, I usually don’t count on anyone’s support for the various kinds of craziness in this thread except yours. 😅
 
Just drawing inspirations from Pencak Silat... Definitely not rated for using against woods 🤣

 
Just drawing inspirations from Pencak Silat... Definitely not rated for using against woods 🤣

Well, if a tree could attack you with a knife, I’d definitely master that move.
I've always been curious why, in these self-defense videos against a knife, or for example, what to do against someone with a knife, they always assume the person holding the knife is standing still and completely clumsy? I don’t know a scenario where you could defend yourself against a knife, even if you’re a UFC champion.
 
Z zaedion

I know you’ll appreciate this story.

I sharpen knives, by the way, and I’ve been doing it in my area for about two years now. It just so happened that I’ve sharpened A LOT—no, a TON—of knives. Often, I would hone my skills by taking a blade, sharpening it, then deliberately dulling it just to sharpen it again, intentionally building my experience. And I made it a principle to never draw information from others. In other words, I wanted to figure out the best abrasive, the best parameters, and everything else on my own, through my own notes and experiments. That’s just how it went.

I’ve only cut myself once, about six months ago. I was sharpening a tanto, and its tip wasn’t like a typical tanto—it was more like a dagger, an Unobi-zukuri style, look it up, it’s a dagger-like tip. I sharpened it to 11,000 grit, to a perfect edge that could cut a napkin effortlessly. As I reached for a microscope and pulled my hand back, I lightly brushed my right ring finger against the tip. It was so light, I didn’t even feel it. But, my God, I didn’t even feel the cut when the room and table turned into a scene straight out of *Kill Bill*, you know, the one where she fights the Crazy 88. And here’s the kicker—I didn’t feel any pain.

The finger took a long time to heal, and for a while, the tip of it lost sensation. I was a bit worried, but the feeling came back after about a week. Now there’s just a tiny scar at the tip of my finger, barely noticeable. But the lesson I learned? It was only then, after a year and a half, that I truly understood HOW SHARP well-honed blades are. Anything—a kitchen knife, or even, you know, a butter knife (WHERE’S MINE?!)—if I sharpen it the way I do, it becomes a deadly weapon.

Since then, I’ve been extremely careful about safety when sharpening. That moment also made me realize how utterly useless “self-defense against a knife” is—or God forbid, against a blade or an axe (I sharpen axes too). If you so much as graze a blade I’ve just sharpened, even by a fraction of an inch, with any part of your body, you’re done. The most interesting thing I realized is that the tip of that tanto, sharpened to one micron, was so sharp you wouldn’t even know you’d been cut. Not until the whole room looks like a scene from *Kill Bill*.

It’s sobering. And since then, I don’t sharpen knives for strangers, especially ones that could remotely be used as weapons. Only for people I know personally.

I’m honestly afraid to even imagine how dangerous it is—not so much the Tyrant, since it’s small, more like a Roman sword than a typical blade. But the Fell Beast, sharpened by me, is so sharp it cuts deep into thick, rough, dry wood—sometimes so deep that I have to pull it out by leaning my whole body weight into it. This is more about the whole “self-defense against a knife” thing. Not sure why I thought of this.
(It’s dangerous because of its lightness and the fact that it can be wielded like a sword. By the way, until we get swords from Huntsman, I think this is the most weaponized thing Huntsman has at the moment.)

By the way, getting cut so “lightly” in the sense that it was just the tip of my finger was actually useful. It made me realize that I wasn’t arranging items safely around the sharpening station where I secure my knife. Because, for example, brushing any other part of your body against a freshly sharpened blade would be absolutely brutal. Since then, I haven’t even gotten a scratch. I’ve developed my own specific safety system for this, and it hasn’t failed me. Also, with how much I chop things with blades, everything always goes perfectly—but that’s because I know how to fence and more or less understand how to handle blades properly.

 
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I've always been curious why, in these self-defense videos against a knife, or for example, what to do against someone with a knife, they always assume the person holding the knife is standing still and completely clumsy? I don’t know a scenario where you could defend yourself against a knife, even if you’re a UFC champion.
Yes, they're really just for demonstration purposes, unless you drill the offensive enough that it becomes a habit to instinctually respond with offense. It would more effective to learn how to manage the fear in the moment so you don't just freeze, and the acceptance that most likely you'll get cut regardless how good you are, then at least you'd have a chance to escape or fight back, and learn about what kind of grazes you might survive vs ones that you don't.

My picture was really just for satire. I would not recommend training with live blades, even when just swinging them around, I'd keep them in their sheaths just in case. That's why we use trainers and bokken for training safety.

Thank you for sharing the story! That's amazing to hear that the fabled stories are true, it's possible to get it so sharp that it slices the nerves cleanly and you don't feel anything! 🤯 I completely respect your mastery in sharpening, deep respect for the knives and having safety systems that works for you!!

Fortunately, I don't have the skills to get my knives that sharp. It helps me to be able to feel the edge at least a little to constantly remind myself its potential danger 😅
 
I should clarify that I do not condone the use of ANY object as a weapon against another human being (i.e. John Wick with a pencil). I train with them for self-understanding and self-knowledge, understanding of my environment, in hopes for knowing how to respond appropriately if/when someone needs help. It's my own area of interest and passion, very much like M Moorik 's chase for the 1 nanometer edge that can split atoms 😉
 
I should clarify that I do not condone the use of ANY object as a weapon against another human being (i.e. John Wick with a pencil). I train with them for self-understanding and self-knowledge, understanding of my environment, in hopes for knowing how to respond appropriately if/when someone needs help. It's my own area of interest and passion, very much like M Moorik 's chase for the 1 nanometer edge that can split atoms 😉
Honestly, I train for the same reason. The self-discovery and understanding you gain from training with weapons really help in various stressful situations.
I strongly support your training.
I do it myself all the time, striking a tree with a sharp blade or something like that. It’s actually much more beneficial than it seems.
By the way, I’m sharing this not because of the video you sent, but just in general. Once, I saw a YouTube video where some fool was talking about unarmed self-defense against a knife.
I'll say even more: training with weapons, or something like that, is something I often do myself. I go out into nature and practice/explore it.
And you know, there's nothing wrong with that.
I've often noticed an interesting thing: people who train, know how to handle weapons, and so on, are usually the most chill and non-conflict-oriented people.
On the other hand, those who have no understanding or experience with weapons, martial arts, or anything similar are often the most confrontational, because they don’t realize how dangerous it can be.
I’ve trained in combat sports, and you know, in real life, I’d never get into a fight unless it’s an absolute last resort.
It’s the same with weapons, knives, and so on.
In other words, just because you train and learn something doesn’t mean you’re planning to use it.
On the contrary, it feels like the more you understand and the more skills you have, the less likely you are to ever need them—like some kind of Murphy’s Law.
When going to the mountains or out into nature, I realized how helpless we modern people are. In places where there’s no internet or anything like that, most of us have forgotten how to navigate.
My trips to nature are probably one of the best activities I’ve ever practiced.
Like, keeping track of every action, memorizing paths, and so on.
 
What did I do after a tough workday?
I decided to take 30 of my diamond and CBN abrasives and flatten and recondition them using silicon carbide grit on glass.
I spent about 3 hours on this. You know, my hands are sore now, but I’m pleased with the result—abrasives flattened on glass with silicon carbide are literally like new.
When the bonding agent and diamonds/CBN are evenly distributed and freshly exposed, the sharpening process is much faster and of higher quality. I do this about once every six months if I frequently sharpen my knives.
That’s how it goes!
If you sharpen your knives and have abrasives, definitely try getting some glass and silicon carbide grit to flatten them—the results will be faster and better.
On top of that, what could be more interesting to do after a 10-hour workday? Of course, spend a couple of hours on your abrasives 😅

Of course results!
The abrasives are still drying after a thorough wash and treatment, but you can already see how brilliantly the diamonds shine 💎.
---IMG_7008.jpeg
 
Are you saying they lied to us when the diamond stones are gunked up with steel, the recommendation was to get new ones? o_O

What exactly is "silicon carbide grit on glass"? All Google came up with is how to grind glass with silicon carbide... 😅

Does this process work on any diamond / CBN stones? Or just specific ones? I've always assumed there's just a thin layer of diamond shards bonded to the stone, if you grind it wouldn't that strip the diamonds and leave just the steel underneath?

Your wizardry always amazes me! Bravo!!
 
Z zaedion
You know, this actually works on all diamond/CBN abrasives (I don’t use anything else; I have Charnley Forest, Naniwa, Suehiro Gokumyo, jasper, and various natural stones custom-made from traditional Japanese stones, which are cool for a collection, but they lose to good diamond and CBN abrasives in 100% of cases, trust me, guys).
So, any abrasive consists of a binder and, of course, the abrasive component (diamond or CBN). By removing just microns, you expose the diamond/CBN, leveling the abrasive. And voilà! It sharpens perfectly again.
By the way, if you have a diamond/CBN block with a metallic or even organic binder, it’ll last even for your grandchildren. (Especially hard binders, those that aren’t organic.)
The reason I do this is that it’s true—your diamonds are often not as exposed as you’d like; they’re sitting in the binder. By removing microns of the binder, you expose the diamond and make the block PERFECTLY flat.
In reality, I do this for uniform wear and to keep the blocks flat. If you follow proper sharpening technique, your diamonds will never go anywhere.
As for abrasives getting clogged with swarf, well, good sharpening oil and oil for cleaning abrasives pretty much ensure that doesn’t happen…!
Here’s some microscopy of abrasives for you guys, after silicon carbide.
You’re unlikely to find this on the internet because it’s a super niche thing :)
And yes, I assure you, 95% of sharpening shops don’t sell this because it’s labor-intensive and requires skill to master.
Thanks to this, your abrasives, especially high-quality ones, last a reaaaally long time!

A metallic bonded diamond/CBN abrasive will outlive you and even serve your grandchildren (I’m joking about it like that).

I even made a video, accessible via a link, so you can see the results of the work!

And here’s the microscopy of a couple of abrasives!

Check out how many diamonds there are and how uniform the surface is at 400x magnification! :cool:
MO.jpg

MOD.jpg

MOO.jpg



P.S.
The shiny bits are CBN (it’s basically like a diamond, just softer and better in some aspects).
 
Wow... sharpening stones under a microscope looks like alien landscapes! 🤯

Thank you for making the video! It's very helpful to see your setup. Now I wonder where I might be able to find a big piece of thick glass like that, and silicon carbide powder 🤔
 
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