Chapter 132: Earth Kiln and Tile

　　The green smoke is a circular soil pillar, about one meter three in height, one meter two in diameter inside and one meter six in outside diameter.
　　 This hollow soil pillar is covered with two large ceramic plates, one ceramic plate covers half of the soil pillar.
Broken pottery pieces are placed under the 　　 pottery plate, so that there is a distance of about two centimeters between the pottery plate and the soil pillar.
　　 The blue smoke and some flames drilled from the edge of the pottery plate and the gap between the two pottery plates.
　　 Of course, this is not a beacon tower that burns wolf smoke as a warning, but a kiln made by the ceramic master Heiwa of the Qingque tribe under the guidance of Han Cheng.
The 　　 earth kiln was not originally built here, but about a hundred meters away from here, closer to the river, where water and mud can be easily taken.
　　 But after a heavy rain last year and the river rose, the earthen kiln collapsed in half and it could not be used again.
　　 After learning the lesson from that time, Heiwa spent nearly ten days here about a hundred meters away from the river bank to rebuild this earthen kiln which was one size larger than the previous one.
　　 It is far away from the small river and the terrain is high. There were a few heavy rains last year, and the water from the small river did not flood here. It is indeed a good choice to build an earthen kiln here.
　　 After several experiments, as well as the divine son’s advice, Heiwa also figured out some tricks to build earth kilns.
　　 First, after selecting the place where the earth kiln will be built, dig out a pit about ninety centimeters deep, one meter long, and ninety centimeters wide.
Then, in the middle of the pit, a wall of about half a meter high was erected with the adobe made before and mixed with the good mud. Then on the wall, three slender and slender pieces were erected every ten centimeters. The hard sticks and the other end of the sticks were placed on the edge of the pit.
The previous kiln was small, so there was no need to add this wall. Just put the wooden sticks on both sides of the pit. Now the kiln is bigger. If you don’t add the middle wall, these sticks will not be able to bear it. weight.
　　 Don’t worry that these sticks will be burned by the flame, because the outside of these sticks will be covered with a thick layer of clay.
Every three roots are put together in a group, and then they are put together. There are reasons why three roots are used. First, it can increase the endurance, and second, it can wrap more mud outside. If there is only one It is not easy to wrap a stick in mud.
　　 After finishing these, I will build the wall.
After the wall in the pit is level with the ground, according to the front row, continue to put this kind of stick covered with a thick layer of clay on it, which is denser than the one on the lower layer, because this When the time is up, the mud embryos that need to be fired must be placed on the top of the layer.
　　 When these are done, the bottom of the entire kiln will be built, and what is left is that He Mu started to build the walls of the earth kiln.
Like the rammed walls in the tribe, there is also broken hay and some salt. According to the experience gained from the easy cracking of the wall of the earth kiln built before, in addition to these, the black baby also added to the mud Some sand in jars from downstream.
　　 The bank of this small river is mostly muddy, and only on the side where the water is shallow at the turning point can sand accumulate.
　　 There is one thing that needs to be mentioned deliberately, and that is the matter of building a wall and adding salt to it.
　　 This move was too salty. After some thought, Han Cheng changed his approach.
　　 It's not that salt is no longer put in the mud, but the purified salt is no longer put.
　　 is directly smashing the salt mine that was transported back from the salt mountain and adding it to the mud, which can save a lot of effort.
The reconciled mud was built up in circles. In order to ensure that the kiln was round, Heiwa also used two wooden sticks for comparison. One stick is one meter long and the other one is 1.6 meters long. .
　　This method was taught by the son of God before. In the beginning, the pottery that was pinched out by hand was always not round enough. After the son of God taught this method, the problem that had troubled Heiwa for a long time was immediately solved.
　　 was later used by him in the construction of the kiln wall.
　　 For Heiwa, building a kiln wall actually has a lot of similarities with building a clay pot. It is difficult for him who likes to deal with mud.
Because the wall of the kiln is built purely with mud, and the mud that has been made up is softer, so every time you build a height of 30 cm on the top, you need to set a fire below to make the wall stronger. , Then go up and increase.
The 　　 earth kiln is emitting green smoke, and you can feel a wave of heat before you get close to it.
　　 About ten meters away from the earthen kiln, there are a few large stones with a relatively flat surface, and the black baby with muddy hands is busy here.
　　 He easily squeezed out some finely divided dry soil from the clay pot below and evenly sprinkled it on the stone in front of him, and then placed a wooden frame about half a centimeter thick on it.
The 　　 wooden frame is circled with tree sticks with a certain degree of flexibility, broken open in the middle, and the joints are tied with rope.
　　The flat side of the broken stick faces inward, and the curved side faces outward. This is to ensure that the edges of the pottery are flat.
The wooden frame is not a standard rectangle, but an isosceles trapezoid with a large end and a small isosceles trapezoid. The gap between the upper base and the lower base is one and a half centimeters. The tiles produced in this way can be seamlessly connected~EbookFREE.me~ It was not like this at the beginning, but a standard rectangle.
　　 After overcoming the curvature of the tiles with the help of the child, Heiwa finally fired the first batch of tiles.
Heiwa was very happy to see the first batch of things called tiles by the son, because the son said that with this thing, a better house than the deer pen can be built. When time comes, people in the tribe can move out and live. In the room.
　　 Although I don’t know why the son of God wanted to move out of the cave in this way, as long as he looked forward to the look when the son of God said this, Heiwa knew that this house must be more comfortable than the cave where they lived for generations.
　　 In addition to the reason for the house, there is another reason why he is happy, that is, he has completed what the son of God confessed, and the son of God looked at the tiles he burned with joy on his face.
　　 This is undoubtedly the best compliment to his craft, Heiwa is of course happy.
　　 But his happiness did not last too long, because after holding two tiles together for a while, the son suddenly put down the tiles, smiled bitterly and patted his forehead with his hand.
　　 This made him worry about whether it was because of his bad cooking that caused the divine child's discomfort.
Naturally, Heiwa’s craftsmanship did not say that although it was the first time to fire tiles, she had experience in firing a large number of pottery before. The firing of tiles was very successful, which is similar to the small tiles that Han Cheng saw in his later generations. It's almost less than that.
　　 Of course, this should ignore the shortcoming that the size of both ends of the burnt tiles are the same.
　　 The two ends of the tiles are the same size, which means that after the two tiles are stacked together, there will be gaps. With such tiles on the roof, it is easy to leak rain.
　　 After a period of rectification, the model used to make tiles became like this.