Dugu House...

Lan Nuo fell on the bed and flew over when he went there, so he naturally flew back when he came back. Lan Nuo said that before he learned how to fly, he would never want to go to heaven again. It was so uncomfortable.

Lan Nuo, who was lying on the bed, opened the group of Pujie. Although these Pujie were not called beasts, they had much more research on time travel than ordinary people. If you don’t know anything, they had obviously better results.

It's really hard to name: "Does anyone know how to build a gun after crossing time?"

The salted fish looking up at the starry sky: "I won't be sleepy if you say this!"

The salted fish looking up at the stars uploaded the fire door gun production.docx

The salted fish looking up at the stars: "The fire gate gun is the prototype of the gun, this is the simplest, and the protagonist can start from this."

Lan Nuo looked at it and found that the fire door gun was not even as good as the mesh gun. The flintlock gun in his design drawing was the lowest, which was more advanced than the mesh gun. He didn't want to use such a backward thing at all.

It's really hard to name: "This is too time-honored. Is there any more advanced one? Will the flintlock rifle be successful?"

The salted fish looking up at the starry sky: "It's not impossible if you don't consider logic, after all, readers don't pay attention to these things.

But if you really travel through time, the flintlock rifle is really unreliable. Let me tell you the following! The ancient steelmaking technology was not good, and raw iron was not suitable for making barrels. Even if you have qualified steel, drilling holes would be a big problem.

This thing is not a joke. If it is not strong and blown up, it will kill yourself if it is not killed. There is also the spring of the flintlock rifle. This thing requires spring steel. I know the formula of spring steel, but this thing needs to be processed to the same standard. With ancient craftsmanship, the error can be reduced to one millimeter and you can burn the incense!”

Lan Nuo looked at it and was immediately discouraged, but the cows had already blown it out. If they couldn't take out the things, wouldn't it be embarrassing...

It's really hard to name: "That... I made another cheat for the protagonist, the first soul skill, cross-border delivery, and you can deliver things from reality."

Lan Nuo talked about the effect of his first soul skill.

It's really hard to name: "Please help me see, and with this hook, what kind of gun can I make?"

Yin Xiaoyu: "This cheat is good! I wanted to remind you yesterday that your imagination is indeed good, but if the cheat is not big enough, no one will watch it if it is not fun enough!"

Tao Gua Xian Master: "With this hang, let alone the flintlock rifle, AK can be made!"

Looking up at the starry sky, "It's not that simple, it's mainly accuracy. The protagonist's soul power must be a big guy like the machine tool. Processing accuracy is always a problem. In this way, wait for me and I'll make a list for you."

Sakura: "Stop it! Salted fish! They are writing novels, they are not really traveling through time!"

The salted fish looking up at the stars uploaded a time travel purchase list.txt

Grab the Genbao: "It's over, the salted fish is starting again!"

...

Lan Nuo quietly downloaded the purchase list, which was a good thing for him. After a good sleep, he returned to his experience. He asked Dugu Bo for a family blacksmith shop. The blacksmith shop had very simple things, and there was nothing except pliers, anvils, and sledgehammers.

Because of Lan Nuo's request, the blacksmith went home to rest temporarily. In the past three days, no one except him was allowed to enter the blacksmith shop. Even the curious Dugu Yan was stopped outside.

Lan Nuo tinkered with it alone, and there were many things you could buy online, from the most basic ones, such as clamps, files, vernier calipers, to advanced hand-crank presses and small machine tools.

Some people buy parts if they can't ship them at one time and then assemble them. Fortunately, Lannuo has undergone a metalworking internship and has a good understanding of the usage of these things.

Three days later...

Wenxi, the best blacksmith in the Dugu family, returned to his blacksmith shop in anger. He was a senior blacksmith certified by the Blacksmith Association. He even had a skill with the blacksmiths of the Haotian Sect. The family actually handed over his blacksmith shop to a nine-year-old boy for no reason, and asked him to cooperate with the other party.

This is simply a humiliation to him, but he is just a blacksmith. The Blacksmith Association has a good status on the mainland, but it is only not low. Compared with the Spirit Hall representing the soul master, the blacksmith is just a profession with average treatment, and he cannot resist the orders of the head of the family.

When Wenxi saw that his blacksmith shop had changed a lot by Lan Nuo, she was so angry that she was so angry that Lan Nuo was on his workbench, holding a file to polish something, and she was very attentive.

Wenxi really wanted to give him a hard way while Lan Nuo was not paying attention, but the head of the family repeatedly reminded Lan Nuo of the importance, forcing him to give up unrealistic ideas.

Seeing the file in Lan Nuo's hand, Wen Xi was stunned for a moment. The uniform texture on the file was extremely smooth. It was not much better than the file he used. More importantly, the file was very hard. Even if it was polished with steel, there was no wear at all. He admitted that the file was indeed a good thing, but according to Lan Nuo's unfamiliar methods, he knew that he was an amateur.

Wenxi saw two polished and smooth parts on the workbench. His professional habits asked him to pick up the two parts and compare them. With the naked eye alone, he could not see the difference between the two, as if they were copied.

It was hard for Vinci to believe that these two identical parts were polished by this unfamiliar boy in front of him.

Just then, Lan Nuo took out the vernier caliper and measured the parts being polished.

"Tsk! It failed again! It shouldn't be! The equipment is fine! Why is it getting worn out again!"

"What failed?" Vinci's voice scared Lan Nuo, and he turned around and saw that there was someone behind him.

"You are Senior Vinci!" Lan Nuo patted his chest and pressed the parts in his hand to Vinci: "I want to polish two parts with the same specifications, but they always polished them in a wrong way."

Vinci took the parts and compared them with the first two, frowned: "Isn't this the same? Why did it fail?"

"My goal is to have an error of 0.1 mm, but this error is at least 0.3 mm." Lan Nuo was a little discouraged. When he really started, he realized that it was not that easy to build a gun.

"Millimeter? What is that?" Vinci was confused.

"A unit of measurement." Lan Nuo took out the vernier caliper: "This is one millimeter, and one tenth of this is zero point one millimeter."

"Zero point one millimeter? How is it possible? No one can control the error so small! Wait! The error of these is only zero point three millimeters!" Vinci discovered the key to the problem.

"About 0.3 mm, I can't be sure."

"How did you do it!" Vinci asked excitedly: "How is it possible for your polishing action to be so unfamiliar? I'm not saying you can't do it... it's just that I've never seen anyone do this!"

The excited Vinci was already a little incoherent. The strongest blacksmith he had ever seen could not achieve Lan Nuo's accuracy. He was eager to know how Lan Nuo did it.

【To be continued】
Chapter completed!