Zhennanbao, in the huge blacksmith shop, Zhao Hao was holding a carving knife and carefully carving a small wooden board in his hand.

Around him, there were more than a dozen of the most experienced blacksmiths.

These blacksmiths are basically from the original salt department and the black stone department, they have all been taught by Zhao Hao personally, and they have mastered more tricks, so the iron-striking skills are the best.

Zhao Hao didn't know how long it had been since he had personally taught them, and this time, they finally had the opportunity to learn the art of iron-striking from the Great Leader or Elder again.

The carving knife is a tool specially used by Haotianling's blacksmith to cut wooden molds, and Zhao Hao is also carving a knife.

The reason why he used a carving knife instead of a divine weapon was to ensure the unity of the knife and the horn coin.

After all, tens of thousands of knife coins and dime coins will definitely not be made only one mold, and in the future, his blacksmiths will definitely have to copy many, many wooden molds according to the standard molds he made, and these blacksmiths have no magic weapons to use.

If he used a divine weapon to carve the wooden molds of sword coins and dime coins, the speed would be terrifying, but it was very likely that some details of his blacksmith would not be able to carve them with a carving knife at all.

Therefore, he used an ordinary carving knife, and the shape of the knife coin he carved was similar to the flying knife of later generations, the kind of small flying knife with a ring on the back.

The most difficult part of carving this small flying knife is the curvature of the knife body, which is too small or too large, which will affect the overall beauty.

After carving a few wooden planks and carving a few more models, he finally selected a wooden model that was closest to the appearance of the flying knife in his mind, and solemnly handed it over to Niu San, a blacksmith from the original Black Stone Department.

Niu San is the head of all the blacksmiths in Haotian Ling, his skills are naturally quite good, and carving a knife less than the length of his palm is a very simple thing for him, especially if there is a model.

After he took the model of the knife, he used charcoal to draw a shape on the wooden board prepared in advance, then took the carving knife, and scraped out a wooden block about the size of the knife model in three strokes, and after several comparisons and meticulous carvings, two almost identical models of the knife appeared in his hands.

Zhao Hao took the model of the knife he carved out and looked at it carefully, then nodded with satisfaction: "Okay, just use this, cast ten first." ”

When Niu San heard this, he hurriedly beckoned more than ten blacksmiths around him to come to the fine sand on the side, turning the sand for modeling, and ordering people to burn the iron juice and prepare for casting.

The reason why he uses a fine sand mold instead of a clay mold is because there are too many coins, and the clay mold is sintered and deformed after being used once, and if he uses a clay mold, it will be too clay-intensive, and the fine sand is different, and there is no problem with how many times he reuses it.

The fine sand mold was quickly made, and the iron juice was quickly poured down.

But? It will take some time until the rough embryo inside has completely cooled.

Zhao Hao is not idle? He directly ordered someone to take a piece of scrap iron with the thickness of his palm, threw it into the furnace and burned it? Then he picked up the sledgehammer and struck it quickly.

His strength? It was terrifyingly large, and the hammer felt like it had no weight in his hand.

His speed? That's even faster people can't see clearly, "Bang Bang Bang"? A raindrop-like banging sound? The iron was like a piece of soft clay, constantly changing shape.

In less than a quarter of an hour, he had already pulled out a thousand hammers, and the palm-sized piece of iron had been reduced by half by his blow, and had become the thickness of three fingers.

This is the most primitive 100 steel? Its hardness is definitely much stronger than that of pig iron.

But? Zhao Hao felt that it was not enough.

He beat the iron for a while, then put it in cold water and quenched it, and then continued to burn red, and continued to beat, and continued to quench? After repeating this more than ten times? The palm-sized piece of iron has become a finger-thick, boxy iron bar.

What is this thing for?

He didn't explain it to the blacksmith next to him? Instead, he drew out the divine weapon and carved it on the cross-section at one end of the iron bar.

This time? Does it take him a long time? Until Niu San takes out the cooled knife coin blank? He sighed, put aside the carved iron bar, and then burned a rough billet of knife coins in the fire, and then picked up the hammer and struck it carefully for a while.

The rough blank cast must not be used directly as a knife, because the casting is too brittle and needs to be beaten.

After he struck it, it already looked a bit like a flying knife, but he still felt that it was not perfect.

He ordered someone to fetch the whetstone and grind it carefully, until the knife coin in his hand completely changed the appearance of the flying knife in his impression, and then he picked up the thin iron bar he had just carved, picked up the hammer, and smashed it vigorously in the middle of the back of the knife.

With a "poof", two exquisite small words suddenly appeared on the back of the knife, "Haotian"!

This is actually the simplest steel seal in later generations, but in ancient times, before the printing machine appeared, his operation was really magical.

This word can still be conjured up like this!

The blacksmiths on the side were dumbfounded.

Zhao Hao took the created knife coin and looked at it carefully, then handed it to Niu San, and said lightly: "Just like this, immediately organize all the blacksmiths to build, at least 10,000 a day." ”

Niu San took the formed knife coin, looked at it carefully with reverence on his face for a while, and couldn't help but say with a sad face: "Great Chief, oh no, elder, I'm afraid we can't do it so finely, if we do it so finely, it is impossible to make 10,000 in a day." ”

When Zhao Hao heard this, he couldn't help frowning.

It's really hard for him to build this thing.

However, these blacksmiths have limited strength after all, and if each knife coin is hammered as carefully as he is, the efficiency will indeed be very low.

He thought about it, and then said helplessly: "Okay, you just need to polish the blade part carefully, as for the back of the knife, just hit it a few times and grind it evenly." ”

When Niu San heard this, he nodded confidently and said, "Then it's no problem." ”

Isn't he a little bragging, 10,000 a day is not a joke, building sand molds, casting, hammering, grinding, every process takes time, even if you don't care about the cooling time, a knife coin is built, it takes at least a quarter of an hour, 10,000 a day, how does he do it.

It's not that hard, because they're already working together.

There are special skilled hands in building deserts, and small things like this are less than the size of a palm, and they basically don't need a minute to build a sand mold.

Let's not talk about casting, basically the iron juice is burned and poured down one by one, which doesn't consume much time.

It is indeed a bit of a waste of time, but if more than 200 blacksmiths work together, it is not a problem to hit tens of thousands a day.

As for grinding, this kind of work does not require any skills, and is generally done by the blacksmith's family, that is, the last step, they can be completely handed over to hundreds of families to complete.

Therefore, 10,000 a day is not very difficult for them, and even, as their proficiency increases, it is not impossible for them to create 20,000 knife coins a day.