After the file was made, Qian Jin rested for half a day and continued to build drilling tools.

You must know that after the iron sheet is rolled into a tube shape, the inside is irregular. If this kind of barrel is equipped with * lead lettering, it is easy to get stuck and easy to blow up. Therefore, it is necessary to drill the chamber through and polish it smoothly with a scraper. This is where drilling tools come in.

At present, the production of firearms in Chen Guo is extremely low, mainly because the drilling tools are easy to break and the drill bits are seriously worn. A skilled craftsman can drill a few inches long in a day, and it takes a month to complete a gun barrel, and its production efficiency can be imagined.

On the basis of Chen Guo's existing drilling tools, Qian Jin still adopts carburizing treatment, which greatly improves the processing performance. The drill bit is three-edged and sharp, and the front part is finely ground into a two-edged twist shape with a hand-cranked grinding wheel to facilitate the discharge of drilled iron filings. The barrel of the six-turn machine is only twenty or thirty centimeters long, and the drilling tools built by Qian Jin can easily meet the needs.

Next, Qian Jin spent time to create small hacksaws, scrapers, hand drills, tapping knives, etc. one by one. A small hacksaw only needs to sharpen the serrated teeth of a regular long strip of thin iron with a file, then put it into a crucible for carburizing, and finally use a grinding wheel to sharpen the blade and bake the blue. The scraper is triangular in shape, and after the barrel is drilled through by the drilling tool, the scraper is inserted into the barrel and rotated, and the inside of the barrel is very smooth, and there is no obstacle for the lead to shoot out. Hand drills use the torsion of the rope on the wooden handle to drive the drill bit, and the most difficult to make is the drill bit, which is still treated with crucible carburizing and normalizing and tempering.

As for the tapping tool, it is actually made of two iron plates after being cut separately and then hot-welded, leaving a square hole in the middle, and the edges of the holes have been sharpened. After heat treatment, it is still carburized and hardened.

Seven days later, the knives that Qian Jin needed were basically made.

In order to celebrate, he, Tian Li, Ding Wei, and Wu Ju set up a small square table in the iron workshop, ordered a few food boxes, and each of them carried a wine jug and ate with great interest. Looking at the knives around him, Qian Jin was greatly pleased.

In his previous life, Qian Jin heard a sentence that knives are the teeth of the entire industry, and machine tools are the mother machines of the entire industry. Traveling into this world, the machining industry base can be said to be zero. With these knives, Qian Jin already has the technical foundation to be ahead of this era, and it feels like Titi is heroic.

"Master, you can build a six-turn magic machine next, right?" Tian Li said with a red face. Don't look at him as tall, but he's not very good at drinking, today it was Qian Jin who invited him, and he was talented

"I can't eat hot tofu in a hurry." Qian Jin raised the wine jug and touched it with a few of them, and asked Ding Wei: "Shopkeeper Ding, has the mulberry wood you purchased a few days ago arrived?" ”

"According to the master's instructions, I asked for two mulberry trees with a year, and they were both dry wood, which could be used immediately. The carpenter has also been hired. Ding Wei replied.

"Well, then we can build a machine tool next." Qian Jin said with a smile.

"Sir, what is a machine tool?" Tian Liqi said.

"It's an artifact for making firebolts. At present, Chen Guozuan's guns are driven by craftsmen with belts, and the speed is too slow. With this machine tool, the drill can be operated by hand, and a barrel can be drilled out in an hour, and it will not be crooked. Qian Jin explained.

Tian Li grew his mouth and exclaimed: "Master, if you build this machine tool, I'm afraid that someone with a heart will steal it." ”

Qian Jin laughed when he heard this: "I can't wait for it." If someone can build this machine, why should I bother with all the effort. He got up and walked to the table where the knives were held, and his eyes shone with a dazzling brilliance: "I've never been afraid of people stealing teachers, that's because I'm always one step ahead of others!" He definitely has the confidence to say this. Once the wooden machine tool was built, his next step was to develop a real machine tool to ensure a technological monopoly.

"The old man is very witty, I admire him!" Ding Wei arched his hand and said.

Qian Jin waved his hand and said, "You don't need to say these compliments." I heard that the inhuman craftsmen have long made precision clocks, but what about me Chen Guo? The technology of the Inhumans is regarded as a strange skill. My heart really hurts! ”

"The opening of the Guanhai City Treaty Port is a great contribution. When the time comes, it shouldn't be too late to communicate with strangers! Wu Ju comforted.

"I hope so!"

When a few people were having their best of drinking, a craftsman led a green-robed official in, saying that he was here to find Qian Qianhu. Qian Jin raised his eyes and looked, isn't this the protégé Fang Shi of the plum sacrifice wine? He didn't have any friendship with Fang Shi, but today Fang Shi looked anxious, as if he had something to say.

Qian Jin hesitated for a moment, and finally got up and followed him to the door of the iron workshop.

After going out, Qian Jin was a little surprised. At this time, there were more than a dozen officials standing outside, all leading fast horses, and the first one was the Guozi Priest Jiu Mei Ruoting. He thought about it for a while, Mei Saijiu and the others went to the Three Treasures Hall for nothing, could it be that something happened in the capital? So, he walked a few steps to the plum sacrificial wine and saluted, and said with a sweet smile: "Yo, what kind of wind blew everyone Mei to my small workshop today." ”

Mei Saijiu waved his hand and said impatiently: "Don't be sloppy with the old man." Let me ask you, has Your Majesty ever been to your iron mill? ”

Hearing this, Qian Jin immediately thought of the emperor's night exit from Juyongguan in his mind. Looking at the looks of Mei Saijiu and others, could it be that the emperor slipped away again this time? But the group of people who sacrificed the wine of Mei Xingshi moved the crowd to run to the iron workshop, and they had the intention of asking the guilt, and it felt like he had hidden the emperor, which was a little unpleasant. He settled down and replied: "Mei, Xiaguan has been in the workshop these days, and he has never seen His Majesty!" In order to avoid delay, Xia Guan recommends that you look elsewhere! ”

Mei Xijiu stared at Qian Jin's eyes for a while, and then went into the iron workshop to check around, making sure that the emperor was not here. He turned around and went out, and when he passed by Qian Jin's side, he said: "Others thought that you would be injured by raising a cane at home, but I didn't expect you to be idle, hiding here and pondering these strange and ingenious things." ”

Qian Jin didn't answer.

Fang Shi brought the horse in. Mei Saijiu turned on his horse and led a group of people to hurry north.

Qian Jin shouted loudly behind him: "Let's go, don't send it!" ”

Ding Wei and the others had already gone out of the gate at this time. They had never seen such a formation before, and they were all a little afraid. Only Ding Wei has seen some of the world with money, and his face is still indifferent.

"Master, what's wrong? So many high-ranking officials came to the iron workshop, could it be that they were arresting people? Tian Li asked.

"It's right to arrest people. But they didn't arrest ordinary people! Seeing that Tian Li and Wu Ju were both a little frightened, he explained: "Don't worry, these adults are worried about state affairs, and they have nothing to do with our small workshop." Keep drinking! ”

A few people were disturbed by the plum sacrifice wine and others, and drinking the wine again was already much less flavorful. Winter days are short and long, but now the sun is setting a little westward, and night is gradually rising.

Although Qian Jin knew that the emperor had a "criminal record" for sneaking out of the palace, it was about Chen Guoguozuo, and he still prayed silently in his heart: "I hope nothing will happen!" ”

After eating the wine and food, Ding Wei cleaned up the table and began to think about the machine tool. At present, under Chen Guo's measurement level, to ensure the processing performance of the machine tool, one is to ensure that the wood is hard, and this mulberry wood is the first choice; Second, it is necessary to ensure that the machined machine tool is straight enough, the crank must be round enough, and the taper handle of the drilling tool must be tightly connected with the crocker.

When the discussion was in full swing, a few people came in from outside the door, and one of them said to himself after entering the door: "Waiter Qian, prepare some food, I'm a little hungry." ”

Qian Jin looked back and couldn't help but be stunned for a while: How did this cheating emperor come here. He had sworn that he had never met the emperor. But as soon as the plum sacrifice wine left, the emperor came to the iron workshop, and he couldn't argue with it.

"My ancestor, Your Majesty...... Why did you run out of the palace again? Qian Jin stepped forward and saluted, and said with a smile. He glanced behind the emperor, just in time to see Jin Duo and Gonggong Cai avoiding his gaze, and couldn't help but say angrily: "Gonggong Cai, Jin Guard, you two are so bold." ”

"This ...... It's none of his business, but I ordered them to go out of the palace with me. The Emperor smiled with his hands behind his back.

Qian Jin saw that the emperor was helping to speak, and it was not good to scold them again, so he told Ding Wei to hurry up and ride to the county to buy some hot dishes and come back. As soon as the emperor entered the door, he shouted that he was hungry, and he probably hadn't finished his meal yet.

"Your Majesty, this time out of the palace...... And why? Qian Jin asked.

"I'm a little bored, come out and relax! You're not welcome, are you? The Emperor smirked in finding a chair and sat down, ignoring whose territory it was.

"How dare you. Just now, the plum sacrifice wine has been to Weichen's iron workshop, Weichen is afraid that the plum sacrifice wine is a lot of age, if the wind blows outside for a long time, I am afraid of the wind cold! Qian Jin explained with a smile.

"Let them look for a little more, and I will naturally go back if I am distracted."

The emperor seems to enjoy playing a game of "cat and mouse" with his ministers. Qian Jin had no choice but to give up when he heard this, and looked at the emperor in his heart to return to the palace obediently after dinner, and he would explain to the queen mother. If it is not good to be beaten by the Queen Mother again, who will he cry to.

There are no tea sets or other items in the iron shop. The Emperor sat for a while and was a little bored, just as the freshly machined knives were placed on the table again. He got up and walked to the desk, picked up a file and played with it in his hand, and said strangely: "Qian Shi said, you are studying these novelties these days. ”

"Back to Your Majesty, research can't be talked about. Weichen also came up with this set of tools for a while. Qian Jin said with a smile.

The emperor put the file back on the table, picked up the hacksaw and other objects one by one and played with them for a while, but he didn't know why, and after a while he lost all interest.

Qian Jin took the opportunity to walk to the side of Gonggong Cai and Jin Duo and said, "Gonggong Cai, Jin Guard, Your Majesty wants to leave the palace, you have to stop it." When the time comes, the Queen Mother will blame her, you and I will have enough heads to cut off! ”

"Isn't it! But Your Majesty wants to leave the palace, how can the two of us stop it! Jin Duo said with a bitter face.

Since the emperor was punished with a cane because he ate hot pot, the relationship between Qian Jin and him has taken a step further, after all, they have suffered together. At the moment, the emperor can't get rid of him, so he has to think of an excuse to let him return to the palace obediently. The three of them whispered a few words, and finally came up with a plan. The emperor is a newborn calf who is not afraid of tigers, and he must let him know the difficulties.

A bell later, Ding Wei had already rushed back from the county with a food box. Qian Jin cleaned up the table and set up the butterflies one by one, leaving only Gonggong Cai, Jin Duo, and a few close eunuchs in the room.

After Ding Wei left the iron workshop, he went directly to find Ge Yun. Although Wanping County is not far from the capital, the emperor is out on patrol, and this safety still needs to be guaranteed.