As the saying goes, the greater the risk, the greater the benefit! Zhou Chao and Gao Yuan's two masters and apprentices are both wanted by Qi and Zhou, if Zhou Guo finds out that they are hiding in the Xiao family's iron workshop, the weak Liang State will not be able to protect them both at all! But Xiao Yao dared to be so disapologetic and take in the two of them, mainly because Xiao Yao took a fancy to both of them with unique skills!

Although the young and strong Gao Yuan's iron-striking skills are average, his martial arts are extremely high, and he can be a first-class master of the contemporary era, with swords, guns, swords, and sticks in everything, even with his bare hands, he can fight twenty at a time!

And Zhou Chao has superb steel smelting technology, he is the helper that Xiao Yao needs the most at present! Because although Xiao Yao has a lot of scientific knowledge that is thousands of years ahead, these are all theories on paper, and to turn them into reality in such a humble environment in ancient times, they need the help of a technician with rich experience!

So after unexpectedly getting the allegiance of Zhou Chao and Gao Yuan, Xiao Yao immediately carried out his weapon upgrade plan!

Because now although Xiao Yao has made gunpowder, the steel that can withstand the explosion of gunpowder continuously cannot be manufactured because of the current steel smelting technology, and if the barrel is made of bronze alloy, not only is the weight too heavy, it is inconvenient to use, and the cost will become higher! This is the fundamental reason why Xiao Yao has only made a flint gun now, and has not made a more powerful artillery!

Although the musket in Xiao Yao's hand is more powerful than the cold weapons such as swords, it is still only a single-shot musket, and the process of loading is very troublesome, so Xiao Yao decided to make a more powerful pistol - a revolver!

Although the design of the revolver is relatively simple, it is very difficult to make, you must know that when the flintlock was made, the thick and heavy barrel was made by Master Li first using the steel filling method, and then constantly beating it into shape, which took a lot of effort to make, but there was no rifling in the barrel, which led to a great reduction in the accuracy of this musket.

So the first step in creating a modern revolver is to improve the quality of steel! Now with Zhou Chao joining, Xiao Yao asked them to help him improve the steelmaking process, and prepare to develop a liquid steelmaking process that will only appear in hundreds of years - the crucible steelmaking method!

The temperature of the iron block is at least 1,500 degrees to melt the molten iron, but with the current conditions, there is no way to achieve this temperature, so in order to develop this process, it is necessary to create conditions that can increase the temperature of the furnace!

The first is to solve the fuel problem, before this, ironmaking was basically fueled by coal, but Xiao Yao had asked the housekeeper to buy a large amount of coal, and then used the soil method to dry distill the coal, and finally got coke, a fuel that burns at a higher temperature. The second is to improve the crucible, Xiao Yao made a crucible with graphite clay, and then put all kinds of iron into a closed crucible, and finally put it into an improved furnace to heat it continuously, so that the iron in the crucible melts into molten iron, and then becomes a harder iron ingot!

Finally, these iron ingots are processed and manually operated to polish the body, barrel and revolver magazine of the revolver!

In the whole process, thanks to Xiao Yao's modern knowledge and Zhou Chao's understanding of the smelting process of their predecessors, Master Li and others were able to make this super-era product under limited conditions!

Zhou Chao's master and apprentice were completely conquered by Xiao Yao's previous knowledge of Gu Rao: although Xiao Yao was old, his knowledge was unattainable! He is not only far-sighted in smelting cast iron, dozens of levels higher than himself, but also knows everything about literature and geography, politics and people's livelihood, and is omniscient! He just found the Lord himself!

And Xiao Yao treats the people very politely and casually, there is no master at all, and he often invites them to eat some strange but very delicious game feasts, hundreds of people in the entire iron workshop, none of them are desperate for Xiao Yao, and they admire them very much. Ruci's character and style are not exactly the appearance of the emperor in the biography!

The most important thing is that Xiao Yao is the apprentice of Taishang Laojun, and he is blessed by the gods, so he has a future with him!

Because in the face of Zhou Chao, they knew so much mysterious knowledge about themselves, Xiao Yao still used the previous set of immortal explanations, so that Zhou Chao Gaoyuan instantly relieved his doubts about himself, so that he followed himself even more desperately!

。。。。。。

"Childe, your design is really ingenious, original, exquisite, Lu Ban is reincarnated... Zhou Chao also learned to pat Xiao Yao's ass.

He and Gao Yuan were using files, hammers and other tools to finely process those thin revolver parts, and in front of them was a magnifying glass!

That's right, it's a magnifying glass! This is the glass convex lens made by Xiao Yao under the guidance of Liu Shui, although it is not very clear, but it is still very clear when you look at those accessories up close.

But what made Zhou Chao platter was not this magnifying glass, but the design of this revolver, with only a few simple accessories, combined together, you can push the rotation of the magazine while pulling the trigger! The design of this mechanism made Zhou Chao feel that this was a talented idea.

And Xiao Yao also asked them to use nails to grind out screws and steel wires to wind springs, these common accessories in modern times, in Zhou Chao's opinion, this thing should only be there!

These accessories are not easy to make, the screws are only a few millimeters in size, if it weren't for this magnifying glass, they wouldn't be able to see clearly, let alone scratch the threads on this iron nail.

"These are just a few things, they are easy to use, but they are all processed by hand, and they can't be quantified!" Xiao Yao is still a little regretful, the crucible steelmaking, the creation of the mold base, the grinding of accessories, a series of processes are all required by Zhou Chao and their manual operation, to create this revolver, it has taken him half a year!

Zhou Chao was already surprised by Xiao Yao's frequent words that made people seem to understand but not understand, and then he picked the one he understood and said: "These accessories are designed by Gongzi, of course they are easy to use!" It's just that the weapon called the revolver assembled from these accessories can also be as powerful as the musket? ”

Zhou Chao: They were shocked by the power of that musket! After taking refuge in Xiao Yao, during this time, Xiao Yao often took them out to hunt in the mountains, and they naturally used that musket, and at that time they also shot the head of the wild deer at close range, although they were so scared that they threw the gun on the ground, but the visual impact still made me feel palpitations, this weapon is really powerful!

"This revolver is more powerful than a musket! So you all have to polish these accessories carefully according to my requirements! And that barrel, you're going to give me a good rifling in it! Xiao Yao pointed to the rotary wheel manual lathe that had been designed long ago and was used for manual rifling.

"Don't worry, Childe, according to your orders, the rifling inside the barrel has already been sharpened! This is shorter than the barrel of a musket, and it only takes one height to sharpen it! You see, we have also polished these accessories you requested, and the size is the same as Childe's requirements! Zhou Chao handed over these carefully processed triggers, magazines and other accessories to Xiao Yao.

"Well done! With these parts, the revolver is basically made! You go and help me see how the green alum, saltpeter and other things that the housekeeper sent over are in condition, and see if the glass test tubes made by Liu Shui are ready! After giving the order, Xiao Yao began to assemble the parts of this pile of revolvers by himself.

The body of the revolver has two halves, as long as the trigger, spring and other parts are installed in the body, and then the two halves of the body are nailed together with screws; Then transfer the machined barrel to the front end of the barrel along the thread, and tighten it with screws; The hardwood carved handle is attached to the handle, and the magazine is finally assembled!

Syllable! Close the magazine! The revolver was successfully made!

"Now there's only bullets left!" Xiao Yao held this revolver with a length of less than twenty centimeters, a weight of less than two catties, and a polished and shiny body, and said very excitedly.

"Master Li, these copper shells are still too thick, you think copper is not money! Thin it up a little more! Xiao Yao looked at Master Li's newly suppressed bullet casing, and was dissatisfied.

The process of manufacturing the bullet case is relatively simple, first melting the brass and casting it into a copper cap, and then using an earth lathe to manually stamping and polishing the copper cap, a complex process, and finally making the copper cap into the shape of a bullet case.

Master Li, who was asked by Xiao Yao to rework, was suffering in his heart! This copper shell has been pressed thinner than copper coins, Xiao Yao is still not satisfied, and it is as thin as a fingernail!

The bullet casing was handed over to Master Li, and Xiao Yao's mind was now thinking about the primer!

Brass bullets belong to modern products, the key is the primer, and Xiao Yao dug out all his chemistry teachers in order to make this primer.

Xiao Yao uses the reverse deduction method to make a primer, the first step is to produce sulfuric acid, and the raw material is the green alum collected by those housekeepers in large quantities - ferrous sulfate!

First put the green alum in the distillation kettle to calcinate, at high temperature, the green alum decomposes, releasing sulfur dioxide and sulfur trioxide, of which sulfur trioxide and water vapor condense at the same time, this is sulfuric acid!

Of course, the sulfuric acid produced in this way is mixed with a lot of impurities, including sulfurous acid, so it must be further purified! It's to add oxygen to it, where does the oxygen come from? It's simple, Xiao Yao grinds those saltpeters into powder and heats them, and you can separate and release oxygen!

After a series of chemical reactions, Xiao Yao finally produced relatively pure sulfuric acid!

As for making nitric acid, it's simple! Sulfuric acid and saltpeter can be heated to produce nitric acid vapor, which is liquid nitric acid when these gases are collected and cooled.

After making sulfuric acid and nitric acid, the primer has already made more than half, dissolving the metal mercury, that is, mercury, in nitric acid, and then adding the alcohol extracted from the wine for esterification, and finally obtaining the raw material of the primer, mercury thunderate.

Finally, the mercury thunderate is adsorbed with pre-cut straw paper, and then put into a copper hat carefully made by the goldsmith, and the heart is dried, which is the finished product of the primer!

With phosphorus fire, the bullet has been made 99 percent, and all that remains is to pour gunpowder into the copper bullet case that Master Li pressed out without sleep or food, and then inlay a copper cap with a primer on the hole behind the shell, and finally press the copper warhead into the bullet case, so that a handmade bullet with fine workmanship and high price is made!

Zhou Chao and Gao Yuan all looked at these six one-inch-long, polished and polished bullets, and couldn't help but look at them dumbfounded, why is Childe's head so elusive, coming up with so many methods, and doing so many processes, just to make these fake gold bars?

Xiao Yao himself also calculated the account, in order to make these six things, he spent a total of more than a pound of refined brass, and Master Li led more than a dozen ingenious goldsmiths to spend more than a month constantly polishing and forming, and finally made it, and it took a few taels of silver to make one.

"These are called bullets! Is it good-looking? Do you like it? Xiao Yao held a golden bullet and shook it in front of their eyes.

"It's good-looking, I like it, it's better than those gold bars made of gold shops!" Both nodded.

"You won't like it later." Xiao Yao loaded the bullet into the magazine of the revolver, and then aimed at the broken knife on the opposite side of the desk that had been dented by the previous musket, yes, it was the Su Tiebao knife built by Zhou Chao, and now it was used as a professional target for shooting tests.

Zhou Chao's master and apprentice knew that Xiao Yao was going to shoot, so they all consciously covered one of their ears, and the other hand of the two Rao covered Xiao Yao's two ears at the same time, this is the consciousness of being a follower!

Bang! Bang! Bang! Bang! Bang! Bang! Six rings in a row!

Zhou Chao's two hearts were like being hit six times in a row by a heavy hammer! Shock! Astound! They were familiar with the muskets, so they knew that after the muskets were fired once, it would take a while to reload the gunpowder bullets for the second shot.

But now Xiao Yao has fired six shots in a very short period of time, to be precise, within ten seconds! That is, the revolver in his hand is at least six times more powerful than that musket!

"Childe, the revolver on your side is too powerful, even more powerful than that musket, and this is really a peerless and exquisite mechanism designed by Childe himself!" Zhou Chao glanced at the knife that had been shot and deformed, and immediately slapped Xiao Yao's ass.

"Haha, with this revolver, who can be my opponent now!" Xiao Yao also fluttered, and then hooked the trigger circle with his finger and turned the revolver up, that action was so chic and confident!