Compared with the arquebus, the flintlock pistol greatly simplifies the firing process, and also improves the firing rate and shooting accuracy, making it easy to use and can shoot in any situation.

However, the production is more complicated, in the absence of lathes, drilling machines can only rely on craftsmen to forge and polish by hand, just the rifling of a barrel is enough for craftsmen to grind for a day or two, and the bolt structure is not complicated but still contains a lot.

Iron striking is used to fix and accelerate flint, which is not much technical content can be made by any craftsman now, but the spring steel involved in the main spring, buckle spring, and iron spring is not only a problem in the forging process, but also has a great relationship with the toughness of the steel, and it is not good to be too tough or too brittle, so this ratio needs to be tried continuously.

The bolt movement is even more critical, it maintains and releases the power of the main spring, and transmits the power to the iron, but fortunately, the process of the machine movement is not complicated, and now the biggest problem is the spring steel, as well as the production of the barrel, these problems to solve can not be successful in one day.

Li Zhi thought about it and gradually became solemn, he didn't expect that he still had such a long way to go... After thinking about it, I still have to go to the Foundry Bureau, and the industrial base can't only be steel, but also something more critical.

In the next few days, Li Zhi didn't even return to the palace, and completely plunged into the casting bureau, so Zhao Jiujiang found a few literate craftsmen and arranged a room for them to tell them about something they had never heard of called a lathe.

The lathe is also known as the mother machine of all equipment work, in fact, there were lathes in ancient times, all of which were wooden structures, pulled by hand or foot, rotated the workpiece through ropes, and cut with tools in hand, so the fixed tools were not very stable, and were generally used to cut wood.

There are many types of lathes, including milling machines, planers, boring machines, drilling machines, grinding machines, gear processing machines, and so on.

Li Zhi explained to the craftsmen how these lathes were made, and the key points of the principles were annotated while talking about it, and the craftsmen were like students taking notes.

Many craftsmen suddenly have their appearance in their minds, and the production process of the lathe is already clear to the master who has been making it for many years.

In this way, it is naturally not that these craftsmen are smart, but that Li Zhi found that the crystallization of civilization in his consciousness actually has the effect of enlightenment, and while imparting knowledge to others, it can penetrate into the hearts of the people, as if it is imprinted in their hearts like data transmission, so these craftsmen imperceptibly absorb a lot of knowledge in the process of listening to the class.

Li Zhi has been explaining to these craftsmen for several days, and finally everything that should be said is finished, and the rest depends on how these craftsmen practice.

The production experiment of the lathe has been carried out, but the most important thing for the lathe is the alloy cutter head with sufficient strength, otherwise it is impossible for the lathe to process steel.

Alloy is a substance with metallic properties synthesized by a certain method of two or more metals and metals or non-metals, and the common alloys in ancient times are: brass, bronze, etc.

Brass is the alloy of copper and zinc, bronze is the alloy of tin and copper, and what about the alloy cutter head of the steel lathe, Li Zhi decided to choose the high-manganese steel alloy to make the cutter head first

But turning his head, Li Zhi found that the manufacture of alloys does not only need steel to complete, steel is important, but without chemistry, steel cannot be sustained.

Therefore, Li Zhi first arranged for craftsmen to experiment with the production of machine tools, and as for the cutter heads, they still used the highest grade of steel forging first, and then the equipment parts that needed to be on the machine tool were correspondingly reduced in steel grade to achieve the purpose of cutting.

Chemistry and industry, these two can not be pulled back from each other, otherwise they will not get progress, in the past, too much attention was paid to steel production, chemistry is little concern, now even three acids and two alkalis can not be prepared, how to talk about the industrial revolution?

Chemistry is inseparable from experiments, but chemical experiments are inseparable from various chemical laboratory equipment, such as: thermometers, test tubes, beakers, flasks, measuring cylinders, distillation flasks, Erlenmeyer flasks, gas collectors and other instruments.

However, these instruments are inseparable from glass, and the production of glass is very simple, with a variety of inorganic minerals such as: quartz sand, limestone, soda ash, etc. as the main raw materials, and a small amount of auxiliary raw materials are added.

In the past few days, Li Zhi has no one available, Zhu Kai was sent to train the army, and Zhou Man went to be responsible for the establishment of the quilt factory, Li Zhi had no choice but to find Zhao Jiujiang by himself.

Groping all the way, in fact, Li Zhi was not very familiar with the Foundry Bureau, and it took a long time to find Zhao Jiujiang in the steelmaking workshop, and saw that he was supervising the steelmaking of craftsmen.

"Zhao Jiujiang, you can make this king easy to find~"

"If Your Highness wants to find a lowly position, even if you order someone to summon the lowly office, why bother Your Highness so much..."

"That's it, this king came to you, there must be something important, find a place to talk, this is not a place to talk." Li Zhi glanced around.

Zhao Jiujiang led Li Zhi to the hut next to the steelmaking workshop, and Li Zhi said when he saw this: "You let people build a cellar like this with green bricks, and you must ensure the sealing, this king is of great use." As he spoke, he handed over a drawing.

"Your Highness, what is this?" Zhao Jiujiang looked at a kiln-like thing drawn on the drawing and asked.

"This is called the melting cellar, the melting cellar is divided into many kinds, and this king let you build this kind of called the crucible melting cellar, the melting cellar structure includes melting, heat source supply, waste heat recovery and smoke exhaust gas supply four parts, the melting room is placed in the crucible, and the crucible is different from the crucible used in steelmaking, you must remember to instruct the porcelain workshop to make according to the crucible used in steelmaking but remove the raw material of graphite, and then add sand and other materials to the crucible after high temperature melting, clarification and then formation of liquid, cooling can get glass."

"Glass?" Zhao Jiujiang was also puzzled.

Seeing that Zhao Jiujiang was stunned, Li Zhi suddenly thought that yes, this world is not called glass, so he said: "It's what we often call glass!" But this one is colorless and transparent glass! ”

"Colorless glass?" Zhao Jiujiang was shocked after hearing it, generally speaking, the glaze is mainly blue, and there are many colors of green, black, white, and blue, but he has never heard of colorless glaze, and suddenly Zhao Jiujiang was very skeptical of Li Zhi's words, but then he thought that even the new steelmaking king can do it, and the new glaze making method is no problem.

"Then, I don't know what His Highness needs to do in addition to his humble duty and order someone to build this melting cellar?" Zhao Jiujiang asked excitedly.

"You then order someone to find a large amount of quartz, limestone, soda ash, feldspar and then let them crush it, and dry the damp ones, remember that the iron ore in the raw materials must be removed, otherwise it will affect the color and quality of the glass."

"Alright, you go ahead and arrange it."

Zhao Jiujiang hurriedly retreated and went down to make arrangements.