Can You Slice A Rock With A Sword Or Katana?

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Seeing a sword cut through a giant boulder or stone is something we’ve all seen in films and TV growing up.

And that begs the question, “can you slice through a rock using a katana or sword?”.

The short answer is no, you will not be able to slice through rock with any kind of sword, whether it be a Japanese katana or European broadsword.

This is simply because a rock is very hard and would be much harder than any steel they had during those times.

In fact, even modern swords aren’t made tough and hard enough to cut through boulders.

So if you’ve been looking forward to finding a sword and being able to cut through a boulder, you are sadly out of luck.

In this article, we’re going to take a close look at katanas and swords and what they can actually cut through.

So if you’ve been curious about the ancient art form of swordsmanship, you’ve come to the right place.

Read on to learn more.

Is There Any Sword That Can Cut Through Rock?

No, there is no sword out there that can cut through rock.

Being able to make steel strong enough to slice through boulders has been a dream of swordsmiths for a very long time, but it’s something that’s yet to be achieved.

This is because not only do you need steel that is harder than a stone with a sharp enough edge to be able to cleanly slice through it, but you also need the right person to attempt the task.

Theoretically, to accomplish the task, you will need a person who is very large, very strong and is also knowledgeable on the right techniques to be able to slice through the stone.

And while it used to be rumored that ancient Japanese swords called katanas could accomplish the task, that isn’t exactly true, and we’ll get into more detail in the next section.

What Is A Katana?

This is a Japanese sword characterized by a long and single-edged blade, with either a square or circular guard with a long grip that requires both hands.

It is mostly known as the sword that was used by the Samurai and has a lot of legends that surround it.

And for all the wild things said about the katana, a lot of them are sadly untrue.

While these blades were very sharp, ergonomic, and some of the best for their time, they weren’t exactly better than the swords Europeans were making.

They did have their own unique qualities, but a lot of them were due to the very different style that warriors would use when wielding a katana.

In the next section, we’ll be detailing some more of the differences between the katana and European longsword so you have a better idea of what this type of sword can do.

Differences Between A Katana And European Longsword

The most significant difference between the katana and longsword is that the katana is made with hard steel around the edge and soft steel at the core.

This makes for very sturdy construction, but the blades were prone to dents.

That’s why even if you have the most high-quality katana made by ancient masters such as Masamune if you try to cut through steel or rock with it you will still end up damaging the sword greatly.

European longswords, on the other hand, were usually constructed with a single block of steel, which made them denser and slightly stronger.

It would still dent from time to time, but it would take much more effort to dent a longsword compared to a katana.

Another difference between these two blades is their edge.

A traditional katana has a single edge while a longword is typically double-edged.

Combine that with the steel that is used in their construction, and it’s easy to see why Japanese-style sword fighting is much different from European techniques.

If you watch European swordfights, you’d notice that most of the fighters will parry the others hits using their sword, they can do this because their blades are tougher than katanas.

However, most katana fights involve a lot of dodging and weaving as their blades would probably get very damaged if they used it to parry other attacks.

When it comes to functionality though, these two blades are roughly the same.

Whatever a Japanese katana could do, a European longsword from the same time period could probably do the same, and vice versa.

So when asking which is the better weapon, the answer would really come down to the fighter’s preferences and fighting style.


So there you have it.

There is no sword that can cut through rock, and even if there was it would take an immense amount of strength and years of training to be able to do it.

But if you’ve been interested in these weapons and the ancient area of swordsmanship, this is a pretty important snippet of knowledge to have.

Last Updated on June 23, 2021

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My name is David Strong. I'm a knife expert and a US Marine veteran. I used to fight in Iraq, so I gained lots of combat experience there, especially when it comes to combat, tactical, and outdoor knives. And this blog is where I share my expertise with you alongside my friend Andy.