Kajiya de Hajimeru Isekai Slow Life - Vol. 6 Ch. 26

[dragonfbare]

Got to see Rike's muscles, today is a good day.
Buff ladies with exposed tummies

 

[Mageos]

Thank you!

 

[DementisXYZ]

Yo-hoo, yo-hoo, a smither's life for me.

 

[Bibliothecarius]

Thnks for the chapter!!!!!

 

[Enalis]

Thank you for the chapter

 

[theShear]

Casting iron weapons is still doable, the only real issue is that it will barely hold an edge. Abut another rather important factor to remember hails back from the very first chapters. This guy is a "Cheat Magic" Blacksmith. This means that, with no real prior experience himself, he could just heat up a lump of steel and smack it a bunch, and the metal would magically shape itself to his will.

Not a Blacksmith myself by any means, but it seems their Order of Operations is something like this:
Liquify Metal (presumably steel) > Cast Sword Blank > Hammer and Refine Blank into Usable Blade > Sharpen and Finalize Blade, Cross guard and Scabbard.

Is casting a steel blade bad? Yes, as a molten metal, steel is not as fluid as iron and nowhere near the level of bronze or copper. They can use the hammering step above as a means of taking cast steel and Magic BS them into usable blades that will probably be better than anything any other blacksmith could make?

From what I understood it's not as "Stuff just works out for him" but "He knows the correct method by instinct and does it exactly like that". If not him telling our cute Dwarf to learn by watching would be pointless, especially since it works and she learns things.
... so yeah critque on how the Author shows it is valid. Though as others mentioned I think him using a "bad method" to bring the quality of his bullshite razor swords down might explain it at least.

 

[3leaves2]

aah, finally another chapter. thanks!

Wonder if Krull feeds on mana that's denser where they live.

Yeah, seems like it'd make sense

 

[Renan_Walheim]

I wanna lick dry Samia's fluff

 

[outinthegardener]

Re: Cast steel swords. Yes, it is possible, but results in a weaker blade. The best alloys of steel for making swords don't flow as well, and when you cast them there are structural flaws and trapped gasses that can cause breaks.

It's inferior to forging. Hammering hot metal repeatedly helps align the grain structure and forces out impurities, resulting in a stronger blade.

Since this is a magic fantasy, let's construct a explanation using magical bullshit. Eizo is not simply sharpening the casts, but taking them to the forge and refining them. You can do something similar to cast bronze in a process called forge hardening. Using his cheat ability he finds and corrects the structural flaws after the cast. These are not cast swords, they're cast and forged.

It would be cool if this manga were more about the technical aspects of forging and metallurgy. I'm curious to know what alloys he's working with- Is it like Wootz steel where the local mine has a natural mix for superior blades? Does his cheat ability allow him to add the right amount of carbon/vanadium to iron? What kind of furnace is he using to cast, a cupola, or some kind of blast furnace, or crucible? That mold making clay ain't just river clay, it's probably a refractory mix of some sort. Tell me, nerds!

 

[hullmat991]

I'm confused. Why are they making molds for the swords? Are they made of bronze or something? I was sure he was using iron/steel for his blades, which should be forged, not cast, if you want them to be more than sword shaped pieces of garbage.

I guess if you've go overpowered magic smithing skills, you get to also skip doing things properly (cough*like doing some really basic research on how to weaponsmith*cough).

Yeah ... He basically just made 50ish slightly sharp clubs.

 

[Nixeu]

Re: Cast steel swords. Yes, it is possible, but results in a weaker blade. The best alloys of steel for making swords don't flow as well, and when you cast them there are structural flaws and trapped gasses that can cause breaks.

It's inferior to forging. Hammering hot metal repeatedly helps align the grain structure and forces out impurities, resulting in a stronger blade.

Since this is a magic fantasy, let's construct a explanation using magical bullshit. Eizo is not simply sharpening the casts, but taking them to the forge and refining them. You can do something similar to cast bronze in a process called forge hardening. Using his cheat ability he finds and corrects the structural flaws after the cast. These are not cast swords, they're cast and forged.

It would be cool if this manga were more about the technical aspects of forging and metallurgy. I'm curious to know what alloys he's working with- Is it like Wootz steel where the local mine has a natural mix for superior blades? Does his cheat ability allow him to add the right amount of carbon/vanadium to iron? What kind of furnace is he using to cast, a cupola, or some kind of blast furnace, or crucible? That mold making clay ain't just river clay, it's probably a refractory mix of some sort. Tell me, nerds!

I think the reason it lacks those details is probably because the author doesn't actually know much about metallurgy or swordsmithing, especially not Western techniques. Which makes this a bizarre choice of topic for a manga/LN.

 

[BoredTears]

Re: Cast steel swords. Yes, it is possible, but results in a weaker blade. The best alloys of steel for making swords don't flow as well, and when you cast them there are structural flaws and trapped gasses that can cause breaks.

It's inferior to forging. Hammering hot metal repeatedly helps align the grain structure and forces out impurities, resulting in a stronger blade.

Since this is a magic fantasy, let's construct a explanation using magical bullshit. Eizo is not simply sharpening the casts, but taking them to the forge and refining them. You can do something similar to cast bronze in a process called forge hardening. Using his cheat ability he finds and corrects the structural flaws after the cast. These are not cast swords, they're cast and forged.

It would be cool if this manga were more about the technical aspects of forging and metallurgy. I'm curious to know what alloys he's working with- Is it like Wootz steel where the local mine has a natural mix for superior blades? Does his cheat ability allow him to add the right amount of carbon/vanadium to iron? What kind of furnace is he using to cast, a cupola, or some kind of blast furnace, or crucible? That mold making clay ain't just river clay, it's probably a refractory mix of some sort. Tell me, nerds!

Considering what has happened so far, the answer is probably just that the magic forge imbues the blades with magic that his skills align in some way to strengthen them. It probably does involve him reheating and forging the cast blades, because it's during forging that he does his magic strengthening.

Besides that I think that rather than vanadium, scandium is also possible, as it will have similar effects on many alloys to inhibit crystal growth. However I believe that scandium while it occurs alongside other metal ores, including iron, does not do so in an form that can be processed alongside iron. His forge may be using some magic to process impurities in ways a normal forge can't and thus include scandium.

Though another answer may just be the magic itself affects crystal growth, and causes a variation in the types of crystals that grow in the metal. Previously, with the elf, magic was described as sparkling grains. If the magic itself is concentrated in individual grains dispersed evenly through the metal it could naturally cause the formation of crystals to shift along with the nature of those magic grains aligning the grain of the metal and inhibiting the growth of martensite.

 

[zaitcev]

I was sure he was using iron/steel for his blades, which should be forged, not cast, if you want them to be more than sword shaped pieces of garbage.

Ironically enough, modern casting improved so much that it's very competitive with forging. This was not true even as late as 1980s. Forging was the only way for centuries! And even today, forging is the only way to create useful non-uniformity. In fact the manga even demonstrated that being done by Eizo previously. Maybe he's just cheating with magic for the casting.

UPDATE: Page 26 shows hammer forging of the cast sword, so this discussion is moot.

 

[izumabakumatsu]

Who's Aimul again? I forgot after so long.

Pretty sure it's spelled differently in the older chapters but anywah it's the household that Diana belongs to, now headed by her brother Marius. In the official LN, it's translated as Eimoor.

 

[outinthegardener]

I think the reason it lacks those details is probably because the author doesn't actually know much about metallurgy or swordsmithing, especially not Western techniques. Which makes this a bizarre choice of topic for a manga/LN.

That's likely part of it. I think as a writerly question, it's a choice of how much technical jargon to include. Less than a research paper for sure, but how much less? This author has written close to zero, and that means they don't need to know anything about metallurgy specific to swordsmithing. They could have chosen to include as much as they could get with a few hours of research. But- that means more jargon in the story.

It's a value call, like the difference between hard and soft sc-fi.

 

[CrimsonNanashi]

What are those swords??? They’re way too thin in the blade to be a longsword

 

[phil777]

Needed some more sweaty Samia. Not enough sweaty tiger girls after Pulchra.

It's called a Tigerl. :3

 

[RanmaChaos]

All of these girls are top notch!
Diana is such a sweet heart.
Saima, of course, has the best faces.
I love how Rike is toned and muscular without being bulky
And Krull is best girl.

 

[HaikenEdge]

Also, is it just me, or are do MC's cast swords also include crossguard and hilt in the casting? Typically, when a sword is being forged, you don't include the crossguard until after the blade is forged, yet Rike is seen hammering a sword that already has a crossguard on it and MC is seen sticking a sword with a crossguard on it into the forge itself.

Wouldn't that make the swords way heavier than necessary?

 

[finalm]

I'm confused. Why are they making molds for the swords? Are they made of bronze or something? I was sure he was using iron/steel for his blades, which should be forged, not cast, if you want them to be more than sword shaped pieces of garbage.

I guess if you've go overpowered magic smithing skills, you get to also skip doing things properly (cough*like doing some really basic research on how to weaponsmith*cough).

Yeah, this seems to come back like the plague. I honestly thought the author did some studying and trashed the concept (he was forging steel just a few chapters back), but it seems he's convinced that this is how you "mass produce" swords and only the high end stuff gets the forge... What can I say, there's pretty much no writer or mangaka who wants to learn anything about the core concept of their work. Too much reading I guess...