The moving base plate uses the previous guide rail design, which is pulled by manpower, and can be easily pushed and vertically translated as long as oil is added to the guide rail.

The top of the platform is used to hold the barrel of the gun with two iron rings, as long as the barrel is threaded into the iron ring, and then the gap is filled with wood, the barrel can be well fixed.

These are all problems that have been solved before, and Chi Fei just took a look at it, he is more concerned about the perforation part of the runner, which has not been completed before.

I saw that the runner was made of hard oak wood, and it was made into the shape of a car steering wheel according to Chi Fei's requirements, which was conducive to human hand rotation.

The runner is connected to the fixed valve, and the fixed valve can be driven to rotate together as long as the runner is turned.

In order to fix the drill bits, the craftsmen were clever enough to make the inner diameter of the fixing valve square instead of round, and the shanks of all the drill bits were also square, and two square sleeves of different sizes were made.

When using drill bits of different diameters, it is necessary to put the corresponding size of the casing on the outer shank, and then put it into the fixed valve, so that the long drill bit can be well fixed in the fixed valve.

At this time, as long as the runner is turned, the long drill bit can be easily driven to rotate together.

Seeing this ingenious design, Chi Fei couldn't help but sigh that the ancient craftsmen were indeed smart. As long as it is a mechanical problem, they can always solve it in a very ingenious way.

In order to better demonstrate the punching effect, Wu craftsmen deliberately took a primitive barrel that had just been built, and then carried out a punching experiment.

This primitive barrel was made of iron-clad branches, and although the inside was open, the inner diameter was very rough and pitted.

In the past, such a barrel would have required a long time of manual polishing to gradually smooth the inner wall.

After the experiment began, the craftsmen first applied lubricating oil to the small drill bit that had been fixed, and then one person was responsible for slowly pushing the machine that fixed the barrel forward, and the other person was responsible for slowly turning the runner to rotate and punch the hole.

When the craftsmen were punching, Chi Fei explained in detail to Ning Yabai on the side that the reason why the musket was difficult to make was because the barrel was extremely time-consuming and laborious to make, so it was difficult to achieve mass production.

In order to solve this problem, he and the craftsmen came up with this machine specially designed to punch the barrel, hoping to speed it up.

While listening to her brother-in-law's explanation, Ning Yabai watched with great interest how the craftsmen used this machine to punch holes.

After a "zizi" grinding sound, a long, thin drill finally came out of the other end of the barrel, and brought out a lot of iron sand.

A craftsman then used his mouth to blow out the remaining iron sand from the barrel.

After making the small holes, the craftsmen removed the small drill bit from the fixed valve and replaced it with another drill with a larger diameter, and then punched the barrel in the same way.

After a total of three drill bit replacement drills, the inner diameter of the barrel was finally enlarged to a suitable size.

This step alone took more than an hour.

Chi Fei and Ning Yabai didn't get bored the whole time, but stayed by the side and watched. They know very well that success depends on this step.

After three times of constantly replacing the drill bits of different diameters and punching holes, Craftsman Wu removed the barrel and wiped it with a cloth, then brought it to Chi Fei and said, "Master Su, let's see if it's okay first." ”

After Chi Fei took the barrel of the gun, he immediately walked to a well-lit place, put the barrel up and aimed inside.

He clearly saw that the inside of the barrel was indeed straight, and the inner diameter was very regular and round, which was greatly improved in terms of standardization compared with the previous three trial guns.

Chi Fei asked Craftsman Wu: "If you polish the inner wall of the barrel to the point where it can be used, how long will it take?" ”

"It only takes two to three days." Craftsman Wu said excitedly.

No wonder he was so excited, this efficiency was a hundred times faster than before.

In the past, it took a lot of time just to grind the correct inner diameter size by hand. It's a miracle that it's been done in just over an hour.

Chi Fei said with great satisfaction: "Very good, at this point, you can implement the division of labor and cooperation I mentioned before."

In the future, Master Wu, you will arrange the specific work of each person, and the more detailed the better.

For example, divide everyone into more than a dozen batches, one group is responsible for building the original barrel, one group is responsible for punching, one group is responsible for polishing, one group is responsible for making the handle, one group is responsible for making the fire door, etc., and I will study the specific details with you later.

As for the manpower, you don't have to worry, after a while a new group of craftsmen will come over, and then you will arrange their specific division of labor.

All the masters have worked hard, wait a minute, all the rewards will be rewarded, this is the reward given to you by Ning Qianhu, please accept it with peace of mind. ”

"Master Xie, Lord Xie Su." When the craftsmen heard that they were rewarded, they immediately thanked Ning Yabai and Chi Fei with joy on their faces.

Ning Yabai bowed his hand and said, "This is what all the masters deserve, you have worked hard." ”

The craftsmen have said that they are not working hard, this is what they should do.

Everyone smiled, feeling that the hard work for most of the year was finally not in vain.

After coming out of the workshop, Ning Yabai scolded with a smile: "Stinky boy, this bounty is obviously from you, why did you say that I gave it?" ”

Chi Fei asked with a shocked face: "What, you don't plan to pay me back?" I'm at a loss. ”

Looking at his funny appearance, Ning Yabai couldn't help but slap him, and his heart was quite moved.

Whether it was the brother-in-law's initiative to ask his father to let one of his brothers follow up on the matter, or this act of showing favor to the craftsmen in his name, it was all intentional on the part of the brother-in-law.

There are some things that don't need to be said explicitly.

He understood his brother-in-law's kindness.

"Ah Zhen, after the problem of this barrel is solved, can the musket be mass-produced?" Ning Yabai came here for the first time today, and she still didn't know much about the various situations.

"As long as we strictly follow the division of labor and cooperation process I just told Master Wu, we should be able to achieve mass production. Moreover, this division of labor is also very beneficial for the secret process of muskets. ”

"Why?"

"Because each craftsman only understands one process, and the other processes are not understood. As long as they are not allowed to communicate with each other about what they do, it is effective to prevent the leakage of the craftsmanship of musket making.

And it is far easier and less time-consuming for a craftsman to learn a single process than for him to learn how to make an entire musket from beginning to end.

This is the biggest benefit of the division of labor, which maximizes productivity.

In fact, this is not only true for making muskets, but also for making other things.

For example, if you make a bow and arrow, you can greatly improve the efficiency by having different people make the bowstring, handle, arrow, and other parts.

Because it is far more difficult to train a skilled craftsman who can make an entire bow and arrow than it is to train a craftsman who can only make bowstrings. ”

Ning Yabai felt that it made a lot of sense, and decided to let those people in the Ministry of Industry use this method to make bows, arrows, spears and other weapons after he went back.