Li Yi and Lu Yong chatted while walking, and soon came to the stone wall.

"I have already said the shape of the mill, and I will not repeat it now. Let's determine the size on the spot and draw the outline with a stone pen, this method is concise and clear, Brother Lu might as well try it! Li Yi found a white stone with a soft texture and handed it to Lu Yong.

"I'll try." Lu Yong took the simple stone, he held the stone, but he stood there and didn't know how to start.

Lu Yong is a inherited craft, when he was an apprentice, he was taught by his master, so he was limited to traditional stone tools.

Li Yi thought of this, he couldn't help but laugh dumbly, broke a branch from the tree on the side, handed one end to Lu Yong's hand and said: "I'll fix a little, you rotate the other end to draw a line, let's try it, I promise to surprise you!" ”

Lu Yong scratched his head, he didn't understand the meaning of Li Yi's words, but as the branches continued to rotate, a regular arc appeared in front of Carpenter Lu's eyes. Lu Yong's doubts disappeared, he showed a surprised smile, unconsciously stretched out his big finger, and exclaimed: "Brother Li is really a god, he can simply draw a circle!" ”

"It's just a small skill of carving insects, and I also learned it from others, which is really nothing compared to the extremely practical tools. If you carve out a mill and a grinding plate, and the elders of a village and even the neighboring villagers get benefits, then the merit is immeasurable! When Li Yi spoke, a standard perfect circle appeared in front of the two of them.

"Yikes! That's round! Lu Yong gently stroked the stone wall, his eyes radiated a surprised light: "This is the most regular circle I have ever seen in my life!" ”

In order to draw the standard, Li Yi folded the end of the branch into a right angle, and chose a pit as a dot, so carefully manipulated, it is difficult to draw a circle. With the assistance of Li Yi, the outline of the grinding pan and the grinding mound was determined.

"Brother Lu, you should be busy first, if you encounter something difficult to solve, go back to Taiping Village, and I will try to help you solve it!" Seeing that Lu Yong had already mastered the general situation, he gave two instructions and went down the mountain.

Wang Heng was already waiting in the village, and when he saw Li Yi in the dust, his face was full of spring breeze, and he knew that everything was going well with him, so he greeted him with a smile and greeted him.

"Brother Li, please go into the cold house for a while!" Wang Heng has rebuilt his new home, and in order to save time and labor, the whole village is a thatched house.

Li Yi entered the small courtyard, which was both familiar and unfamiliar, and saw the courtyard wall that had been burned by the fire, and there were black patches that had been burned by the fire. Li Yi came to the house and saw that there were several more carpentry tools in the house, including the big cylinder.

Wang Heng pointed to the finished parts and said: "The structure of the fan car is relatively complex, and I can only look at Brother Li's drawings roughly, and there are some details that need the help of the brothers." ”

Li Yi nodded, he already knew it in his heart: "The fan car integrates the shapes of cylinders, quadrangular pyramids, oblique square grooves, etc., and there are intersecting and intercepting sections, and its structure is relatively complex. But the precision of this kind of mechanical manufacturing is not high, and it is a shortcut to make the big belly in the middle and then divide the rest of the part. Brother Wang is an expert, how to combine it conveniently, you have to make your own ideas. ”

Seeing Wang Heng nodding frequently, Li Yi continued: "In fact, the first one is an experimental product, so you don't need to be so fine at all. The first fan car was made, the experience was accumulated, and the rest was a breeze! ”

Wang Heng is also a smart and clever person, and with a little guidance from Li Yi, the first fan car began to take shape.

Before the modern machinery settled in the mountain village, the mill was indispensable to Li Yi's hometown, and during the New Year's Festival, the mill road was lined up with a team of rice milling and flour grinding to catch up with the New Year's goods such as rice cakes and bean bags.

While Lu Yong was busy in the mountains, the village was not idle, and was building a house and building a foundation. After more than a day of hard work, the house stood in the center of the village. Li Yi walked into the grinding road, only to see that the grinding platform made of dirt was very solid, and Zhao Zhe and other men were rolling the huge grinding pan and grinding stone, and more than ten young men were tired and sweating profusely and panting.

"Everyone's worked hard!" Li Yi greeted everyone with a smile.

"Nothing! Brothers have strength! Zhao Zhe smiled and said: "Work harder, assemble the mill, Brother Li's gift to the villagers, don't you want to see it?" ”

It can be heard from Zhao Zhe's tone that he has not yet realized the important role of this mill, and it is only because he has learned martial arts and is grateful to himself that he is willing to help.

Li Yi shook his head helplessly, but he knew that this kind of distrust would soon be abandoned by everyone, and this mill was just a cannon, and the things that would be given to everyone next would emerge in endlessly.

There are many people with great strength, and the hundreds of catties of grinding plates were easily put on the foundation by all the strong men. Since there is no cement, it can only be reinforced with red clay. But Li Yi couldn't wait for this last procedure, he was eager to let everyone see the efficiency of the new thing: "Come, smash the wooden pole into the navel in the center!" ”

The young man in Taiping Village was real, and before Li Yi's words fell, the two big men jumped on the grinding plate, divided by two by two, and the oak pole was fixed in the center of the grinding plate.

The outer frame and fan of the mill have been completed, and the people sent have returned from Wang Heng's house, and after a period of busyness, the mill has finally been assembled.

The livestock of Taiping Village, except for the war horses hidden on the mountains, were plundered by the Xianbei people. With a war horse trap, it is inevitable to use a knife to kill chickens, but in Li Yi's eyes, there is nothing that can't work. The horse was put on a splint, and its stubborn temper attacked, but with Li Yi and other strong men in control, it was impossible to turn the sky in a strong beast.

"Drive!" With a crisp shout, the horses opened their hooves and pulled the mill around the mill, and the grass house sounded the "boom" of stones rubbing against each other. The hollow roller is used for polishing, grinding the edges and corners and making the surface of the stone roller and stone plate smoother.

"Clean up the platform, spread a thin layer of millet, and then fill the rest into the cone bucket!" Li Yi held the war horse of Latao, and he commanded everyone with his elbow. Zhao Zhe and the others sighed and finished two things as instructed.

"Brother Li, I'll come!" Zhao Zhe took the reins of the horse from Li Yi's hand. "Drive!" The mill rolled again, and the mill was filled with grain, and the sound was no longer harsh, but it was more laborious to pull.

After a period of time, the unhulled millet was continuously backlogged to the periphery and collected together. Seeing that there were enough of them, Li Yi poured them into the cone bucket above the fan cart.

"It's a fan cart that separates rice, chaff and straw." The working principle is, of course, the separation of gravity and inertia, the wooden fan rotates to generate wind, blowing the mixture in the vertebral bucket, of which the density of the meter is the largest, and the inertial force is also the strongest, falling in the nearest collection tank, the density of the straw is second, and the wind blows a little farther, falling into the wooden trough behind, the density of the chaff is small, and the wind blows out of the fan car and floats on the ground at the tail.