The process of rifling and engraving is also a wonderful ingenuity: the method is to fix a plurality of steel rings on a tie rod, the distance between each steel ring is equal, each steel ring is processed with the same number of rifling wires as the same equidistant scraper, each cutter can be connected to the cutter on the next ring according to its angle, and can be regarded as a spiral line from the beginning to the tail. The protrusion of the cutting edge on each ring is slightly greater than that of the previous ring, forming a series of cutters, the grooves opened have a stable width, depth and spacing, and this combination of ring broaching knives passes through the chamber - times. Then the whole rifling can be cut, which not only greatly shortens the time, but also greatly improves the quality.

Cao Dawei put the drawings on the table with both hands, knelt down, snorted three heads respectfully, and kept muttering: "This is the fairy map!" This is a fairy picture! is to let the old man work for ten years, and the old man is willing. ”

At this time, Fan Fucai stood up and gently helped Cao Dawei up.

Fan Fu smiled and said, "Congratulations to Craftsman Cao, you are now the master here." ”

Cao Dawei was stunned for a moment, and then rejoiced: "Thank you Fan Mansion for your gift." ”

Fan Fu continued: "This gun was changed by my young master, and these drawings were also drawn by my young master, my young master is preparing for the autumn test, and I don't have time to see you, let me say sorry for him." "It's okay, it's okay." Cao Dawei said repeatedly, tears flashing in his eyes. He was just a lowly craftsman, when had he ever received such respect. Fan Fu took out a soft ruler, a ruler, and a caliper, and taught Cao Dawei to recognize it three times in a row, until he mastered it accurately, and then took out a piece of paper and looked at it and said: "The young master asked me to tell you: First, all this size will be used in the future, and other workshops will be the same, which is called standardization." 2. The people in your workshop are divided into springs, drilling, and rifling groups according to their strengths, and the team leader is appointed by you. The spring group is only responsible for the production and research of springs, and the other groups are the same, do not cross each other, the young master said that this is called assembly line production. Third, these kinds of things on the drawings, the young master named a machine tool, the drilling is called a drilling machine, the cutting is called a cutting machine, and so on, and they can be driven by water power in the future. In addition to being responsible for leading people to make these machines, another important task is to find a way to combine these beds on a single machine... ”

Cao Dawei sat dumbfounded, his eyes straight, as if he was stupid.

Wang Huzi, who was in the Beijing Craftsman Battalion, also received an order to be transferred to Zhangjiakou, but he had an indifferent attitude. He is a technical type, and he is bent on how to make good steel and iron, but he has been useless for many years. The quality of the coke itself is not good, and many impurities are artificially added to it, and the same is true for iron ore, and he has a feeling of wanting to cry when he sees the steel smelted. The salary also comes and goes, and the deduction is also quite powerful, if it weren't for the fact that he is a blacksmith who is famous in Beijing, and often takes on some private work, the family can hardly have enough to eat.

He signed the agreement without hesitation, no matter how bad it was? By the time he arrived at the ironmaking workshop that had been prepared for him, he knew he had made the wisest choice of his life. The coke, unlike all iron-making coke (the Ming Dynasty said that it was made of coke, was actually anthracite, or simply burned coal), and it was obviously specially refined. There is also a bellows the size of the furnace mouth, which is pulled by two healthy mules, and it is said that it will be driven by water power in the future. When he saw the fly ash blowing in along the air inlet, his eyes were a little confused, and suddenly his eyes lit up: he knew that the bottleneck of his family's ironmaking technology for several generations had been broken, and what would appear in front of him would be a new furnace of steel.

Jingshi, Xuanfu, Datong, Taiyuan... The same thing is happening in these places. Some famous craftsmen were transferred to Zhangjiakou for one reason or another, and then they all entered the Fanfu compound, and finally, they were assigned to some workshops and fort construction sites.

The most incredible thing is that the Fan family compound also attracted more than a dozen Taoist priests, and Young Master Fan Yubin actually walked out of the study, received them, and stayed four. Fan Yubin specially instructed Fan Fu to separate them into good student arrangements, and each of them was equipped with four young and intelligent apprentices who could read and write. Fan Yubin arranged for one of them to engage in research on the refining of coal and heavy oil; one is engaged in research on acids such as sulfuric acid; one is engaged in the research of flavors and alcohols; A study that uses the various ores that are constantly brought back to the world, and mixes them like alloys... This is Fan Yubin's original chemistry research team.

"I didn't expect that the earliest great chemists in China might have been born from Taoist priests." Fan Yubin couldn't help but sigh.

The construction of the new castle is also in full swing. The approval has come down, and Xuanfu Town has symbolically allocated a thousand taels of silver. Fan Youde, the housekeeper of Fanfu, basically goes once every three days, and the housekeepers of several other houses are also constantly coming and going, bringing a lot of food every time they come, which is very popular with migrant workers. In the final analysis, the quality and progress of the project are linked to the funding. The funds keep up, there is no shortage of materials, and the labor is sufficient. Those who work well, eat well, eat well, and pay every three days, never in arrears, then the progress of the project is of course nothing to say.

Fan Youde also built a huge training ground according to local conditions, and built a shooting range immediately adjacent to the training ground.

By the river, the families of the migrant workers also spontaneously opened up a lot of wasteland and planted various vegetables, which solved many problems.

Fan Yubin is also ready to select a group of honest and hard-working workers from this group of migrant workers to be recruited into Xinbao as the first batch of residents of Xinbao.

Dyeing and weaving workshops were also established, and the dyeing and weaving process of the Ming Dynasty was very high in terms of weaving technology and dyeing, and in terms of color and variety. Fan Yubin still adopts the doctrine of taking and directly acquires one. When the sample was brought, Fan Yubin couldn't help but be amazed when he saw it.

Fan Sixi also went out behind closed doors. When he came to urge Fan Yubin, Fan Yubin told him that it was lead printing that would replace wood-type printing, and that in order to achieve the best results, a material was needed, and the caravan had been asked to find it. In order to avoid being bothered by him again, Fan Yubin had an idea and told him the story of the Dream of Red Mansions in later generations, saying that the name of this story was "The Story of the Stone." And casually read out some of the poems in it, Fan Sixi was like a treasure, hurriedly recorded it, and went back to write a book behind closed doors in a hurry, ready to publish it in the upcoming newspaper.

After Fan Yuxin and Fan Yufu had a long talk with their grandfather Fan Yongdou and father Fan Sanba a few times, they also began to hand over the business in hand, select personnel, and were extremely busy.