Leaving Mertze to Rubina for the time being, Jin says a few words to Goh, who is still a little down.

"Goh, can I talk to you a little later?"

"Uh, yes, Jin-sama."

"Let's go to the workshop after dinner."

"Yes, sir!"

Perhaps because he heard the word "workshop," Goh replied in a more cheerful voice.

Rubina, who was busy chatting with Merce, didn't seem to hear him.

* * * * * * * * * * *

At Goh's workshop, Jin explained what he had discussed with Erza and the others earlier.

"So, ....... First of all, I would like to start by making a golem to serve as an assistant in the workshop. What do you think?"

"I would be very grateful if you could guide me, Jin-sama!

Goh was very enthusiastic.

"Okay. Since you are an assistant golem, what ...... points do you need?"

"Yes. Comprehension of instructions. Knowledge of materials and processes. And precision movement and power. ......

"That's a 70. And the ability to do engineering magic is important too.

Oh, yes. ......

"Now, based on that, what materials should we use?"

"Light, strong, hard, low distortion, and non-magnetic is desirable ......, so I think light silver is a good choice."

"Yes, that's fine."

Yes, that's fine.

"Okay, let's decide on the appearance. You can do whatever you like with this one.

Then go to ......."

Jin was curious to know what Goh would say.

Would he be an adult male or a girl? Or would he be an adult female?

"I have an automata that I would like to fix ...... someday. So I'm going to make an adult female doll as a practice for it.

"Oh, I see."

Jin thought there was a good chance of that, so it was not so surprising.

"So, let's decide on the approximate values for the appearance. All we need is a height value.

In order to create a skeleton, this is the only thing we need to determine.

While it is easy to adjust the body size (fat, thin, etc.) later, the height is a little more complicated (but by no means impossible, especially if there is a man in your life). Especially if you have a son or daughter).

"I want to be about 155cm.

"Yes, that's standard."

"I'd like to be a little slimmer."

"I see."

< had a body like that.

"What do you use for muscle?"

"Too much power makes precise movements difficult, and vice versa, so use biomaterials."

"Yes. But that's not quite right.

What?

"It's not the power that determines the precision movement. It's the rate of expansion and contraction.

Is that right?

That's what's so easy to misunderstand.

Think of a torsion coil spring.

If the diameter of the strands that make up the spring are the same and the diameter of the coils are the same, a spring with a longer total length (= more coils) will have a smaller spring constant than a spring with a shorter total length (= more coils), in other words, it will be a weaker spring.

And if the wire diameter is the same and the total length of the spring is the same, a spring with a smaller winding diameter will be a stronger spring.

This is the premise.

Let's replace a spring with a muscle fiber.

For precise operation, it is advantageous to control the displacement, i.e., the length, easily.

For this purpose, the longer the total length of the strand, the larger the tolerance for small displacement errors. In other words, it is better suited for precision movements.

"In other words, if we make the diameter of the muscle strands thinner and longer and bundle them together in large numbers, we can achieve a good balance between precision movement and power."

"I see!"

This is Jin's method of education.

Of course, one must have a certain level of knowledge and skill to understand this, but Goh, Marikka's student, had a good foundation.

"Then let's give it a try."

"Yes!"

The stock of light silver was sufficient to make the skeleton.

"<><><><>......"

"Yes, that's good."

Jin is pleased to see Goh's skill, and is pleased to see that he is indeed Marikka's disciple.

The speed of machining is not as fast as it should be (from Jin's point of view), but the accuracy of the process is perfect.

Goh completed the basic components of the Adriana-style golem, ...... the skeleton and muscles, in one hour.

"What do you think, Master Jin?"

"It's good. But the joints in the waist are a little weak, aren't they?

"Oh, that's because you sometimes have to carry heavy things, isn't it?"

"Yes, because I'm going to ask you to carry some heavy things. ...... how much did you expect?"

"A ton, I'd say. ......

"Okay. Then I guess I'll leave it the way it is."

Jin thought that it should be able to carry two or three times as much, about three tons.

In fact, <> Golem can easily carry about 10 tons.

After a detailed check, Jin tells him that it passes the test.

Goh's face lights up.

He was about to move on to the next step,

That's all for today. Let's work on the sensors and control core tomorrow.

Jin declared.

"It's better to do such work after you've had enough rest. This is my own experience.

Jin tends to forget to eat and sleep and devote himself to the work.

I understand.

Let's wash our hands and go back.

Yes, sir.

After washing their hands under running water, Jin and Goh returned to the main house after cleaning their hands and bodies with engineering magic <>.

* * * * * * * * * * * * *

"Welcome back, Brother Jin!

Only Erza greets them.

Where are Daikie and Cocona?

They're taking a bath.

"I see."

The two were late taking their own baths because Jin and his friends took priority over them.

"Where are Merce and Rubina?"

"They went to one of the bedrooms to talk."

"I see."

Rubina, who was the same age as Melze and had no friends of the same s*x, enjoyed chatting with Melze.

(Note that Neige and Rouge, the adopted daughters of <> 700672, are friends, but not quite the same age.)

) "I guess it's good for Rubina too. I'd like to ask Amanda to ...... stay over here a little while longer. ...... Oh, shall we bring Amanda over here?"

He had thought about bringing Martha or Meane, but then he thought about bringing Amanda.

"It might be a bit of a surprise," he said. Amanda doesn't know anything about this country.

"That's true. ......"

"So I think it would be better if she had a little background knowledge."

"I guess that's possible."

"I'll call Amanda later. I'll call Amanda later, but I think it would be good to start with you, mother.

Erza recommended her own mother, Meene.

Jin hoped that Meene, who used to be a maid of honor, might know how to handle Merce.