153 the first day of swordsmanship

 When Nilda and I came back to the workshop, there was a lot of sheet metal being produced.
 Basically, it's just a matter of pouring into a sand mold and doing a little processing, so if three out of four of us are familiar with the process, it's no surprise that production speed has increased.

Well, let's get to it.
 "Well, let's get started," I said, rolling up my sleeves.
"Do you mind if I watch?
 Nilda says.
I don't mind, but I don't think it's going to be much fun to watch today. You can go for a walk in the woods or practice in the garden, if you like.
 Today I'm just pounding away at it, because it's probably just a matter of stretching it out to the desired length. Quenching, which is the highlight of the process (I think), is still to come.
Good. I've been interested in this for a long time. I've been interested in this for a long time, and I'd like to see it now, since I don't have many opportunities to see it in Kunimoto.
"Well, that's all right then.
 As I was answering, I picked out some of the sheet metal I had made earlier. I grab one of them with a pestle and put it in the fireplace.

 The first thing to do is to train the sheet metal itself. Normally, this is where you remove inhomogeneous parts of the material. However, in the case of my cheat, it is possible to make a homogeneous and high-quality product without doing so, so although it exists as a similar process, what we do is completely different.
 The sheet metal is heated in a fire pit to fix the inhomogeneities and then it is filled with magic power. This is not a high-end model, but a custom model, so cheating is not an option. Some inhomogeneity is acceptable for high-end models, but custom-made models do not leave any inhomogeneity.
 I have a feeling that if I use cheats, I will be able to make high-strength steel sooner or later, but even if I do, there is no use for it in this world.

 Anyway, the high-quality sheet metal is piled up, heated in a fire pit, and forged together to make two lumps. At this time, iron oxide is formed around the sheet metal, so to prevent this from happening, straw ashes are sprinkled around the sheet metal.
 Heat it up, beat it, and fold it over with a spike. This is also when I would normally be conscious of how the pattern of the iron would appear, but if I were to use a custom-made model with cheats, it would inevitably become homogeneous, so the pattern would hardly appear. What I'm doing now is just the work to make a lump.
 This is a major issue for the future. It would be nice to be able to make use of the non-homogeneous texture while maintaining the cheat quality.
 Since this is a custom-made model, it is taking more time than usual. A little after lunch, the two pieces were finally finished.

Rikke, you got a minute?
"Yes. What can I do for you?
"I'm going to work on one of the most important parts of the Northern Katana, the sword.
All right. Thank you, master.

 Stretch one lump long and thin, and stretch the other flat. When the long one is cooled, heat the flat one.
Normally, you use hard steel for the flat one and soft steel for the long one. Hard steel alone will break. Soft steel will bend.
 In this case, there is not much difference because it is like a cheat high quality steel. But in this case, it's not so different because it's like a cheat high-quality steel. Except in the case of products that do not contain much magic power like general models.
 When the flat side has reached the temperature where it can be processed, bend it into a U-shape and put the long and thin side on it and wrap it. In the case of Japanese swords, this is similar to the process called "Kou-bushi".
In this way, steel with two different properties is combined into one piece. In this way, you can have both the cutting ability and bend resistance of hard steel and the break resistance of soft steel.
"I see. So this is the technology of the north. ......
Yes, it is.
 I know there is a similar weapon in the installation, so I'm guessing the method of making it is the same, but I doubt it's that different. At worst, let's say it's a secret.

 This is followed by the process of stretching to the size of the finished product. The anvil is wetted with water, and a lump of hot steel is placed on it and beaten. As the water evaporates, steam rises, and occasionally, when struck, a sound like the bursting of gunpowder is heard. as if gunpowder is about to burst.
 The first time I made this sound, I startled everyone in the room.
I'm sorry.
"What did you do?
 Ricke asks.
That's what makes the surface smooth.
"I see, it works like that.
 As I'm explaining this, I hear something from outside.

 I hear a voice outside. Oh, I must have startled Krull.
 I hurriedly went out and patted Krull's head, who was right by the workshop, and explained that it was nothing. Krull looked a little worried, but he went back to the hut quietly, which was a relief.

 After that, I continued to heat and stretch it, adjusting the width, length, and thickness, and stopped when it was roughly the size I wanted.
 By the time I realized it was almost dark, the rest of the work would be done tomorrow.
 Feeling a little torn, I told myself that working late was not a good idea, and began to clean up the workshop.