Opening confession school belle

Chapter 70 Mortise and tenon (sunmao, not liumao)

After finding five thicker trees, Chen Xuan marked them separately, for fear that they might not be found later.

Next, there will be a tedious and boring tree-cutting time.

It took more than an hour for Chen Xuan to finish cutting down the five trees.

"Whew..." He frowned as he put down the two heavy trees. The trees were heavier than he expected. If he wanted to move them all back to the house, it would take at least half an hour.

Rather than that, it's better to just bring the tools and make them here.As long as he gets it done before dark, it's fine.

Perhaps he felt that cutting down trees was boring, and he felt a little sorry for the salary Director Wang gave him. He said to the camera: "I originally thought I could move them back after cutting down the trees. But now the weight of the trees exceeds In order not to waste time, I still plan to take the tools from the house and make them here. It’s really hard work for our cameraman, who has to suffer outdoors with me in such hot weather.”

Hearing Chen Xuan's thanks, the two cameramen quickly waved their hands and said they were fine.As professional photographers, although it is indeed very bitter and hot now, they have experienced more crying than this shooting. In comparison, it is okay for a big man to bask in the sun more.

Moreover, Chen Xuan almost always stayed in one place. They could basically complete the task by relying on the stand, and they only needed to check the screen from time to time.

"That's how it is. One of you big brothers followed me back to get things, and rest here for a while. You don't have to carry the camera around, it's too troublesome." Looking at the hard-working camera brothers, Chen Xuan suggested.

The two people who originally wanted to agree looked at the barren mountains and ridges, and finally Qiqi turned her head white: "It doesn't matter, this trip is not far away, the two of us can follow you, and take some shots."

"Okay." Without insisting, Chen Xuan took the two drivers back to the house in a hurry to get the tools, and then returned to the mountain.

Seeing that the five trees he had cut down and placed neatly had not been touched by anyone, Chen Xuan nodded in satisfaction.Put all your energy into the production.

He first took out a ruler and pen and measured the radius and length of the trees.

After measuring for a long time, he recorded the size of each tree.After that, he wrote and drew on the spare space on the paper, calculating the amount of materials he needed.

After calculating these numbers, it took him only a few minutes to cut off all the bark, and then he drew precise lines on it with a pencil, preparing for his own cutting later.

This time, after writing and drawing for a few minutes, he wiped the sweat from his forehead.Picked up the saw and sawed.

With Chen Xuan's hard work, he finished cutting three and a half trees in astonishing half an hour.

He no longer needs to cut the remaining one and a half, because the material is enough. The remaining one and a half can be used as a spare tree, so that if he makes a mistake in any step, he can make a replacement part.

For this bed, he has his own ideas.

He first made two large wooden planks long and two short, the long one was 1.8 meters long and the short one was [-] meters long. They were used as the main frame of the bed so that they could form a rectangle in the end.

Under normal circumstances, normal factories will use nails and some other parts or just glue to fix the bed boards to the extent that they are connected.

Not only do these materials cost "corn", they are also not very durable, and it is easy for the bed to fall apart.

Since Chen Xuan has carpentry skills, it is certainly impossible for him to choose this splicing method.What he wants to use is the mortise and tenon technique used in almost all buildings in ancient China.

Mortise and tenon technology covers many branches, but in general, it does not use a nail and a milliliter of glue, but uses special structural and mechanical means to seamlessly splice two pieces of wood together, so as to achieve connection and firmness.

This technique has many advantages. Firstly, the furniture made of mortise and tenon joints can be used for at least a hundred years without any major problems. It is many times stronger than modern furniture whose lifespan is ten years.

Of course, the mortise and tenon technique is not without its shortcomings. One of its shortcomings is that the production threshold is relatively high, requiring craftsmen to have strong technical conditions and time to make various shapes of mortise and tenon.

Today, for the frame of the bed, he uses a technology called dovetail.

By the way, he'd better explain it to the camera, otherwise, according to the historical trajectory of this world, most people don't understand what it is.

After coughing twice, he said leisurely: "The dovetail tenon is to connect two flat plates at right angles. In order to prevent them from coming apart when under tension, the tenon is made into a trapezoid shape, hence the name "dovetail tenon". The dovetail tenon is a kind of flat wood. The right-angle connection nodes and the trapezoid-shaped tenon can make the corners of the workpiece join with high strength to avoid detachment when force is applied.”

"The base of the dovetail tenon is narrow, the end is wide, and it is in the shape of a big head. This practice is called 'Zha' in ancient architecture."

"The dovetail is larger at the top and smaller at the bottom, which is called 'slip'."

"Placing it first is to make the tenon and tenon have a pulling force;"

"The purpose of closing the slip is to increase the stability of the node when it is dropped and installed."

The production of dovetail tenons is still difficult to do by hand.

Therefore, Chen Xuan first stood up and relaxed his sore muscles, and at the same time prevented his wound from recurring again.

After about 5 minutes, he regained his energy and returned to work.

The two camera brothers looked at Chen Xuan like this. Although the former had just explained it, they still didn't understand what he wanted to do.

Staring closely at the movements of Chen Xuan's hand, he saw that he was cutting and polishing along the traces he had drawn, and soon several trapezoidal shapes appeared at the beginning and end of the board, carving?
"What is this, a decoration?" Finally, a cameraman couldn't suppress his curiosity, and asked quickly.

"Hey, you'll know soon." Chen Xuan raised his eyebrows as he spoke, but the movements of his hands were not slow, and he quickly spliced ​​the two wooden boards together.

Watching Chen Xuan put together the two wooden boards without any nails or glue, the two cameramen stared at each other with wide eyes.

What kind of fantasy technology is this?
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The picture of the dovetail tenon can be seen in the comment area of ​​this book. My account does not have a monthly subscription and I cannot post pictures...

　If there are any mistakes, if anyone understands, please point them out. The author searched the information on the Internet + his own imagination, and sometimes there are errors.

　　
　
(End of this chapter)