I am a primitive

For example, when the cork is pushed forward, most of the wind generated escapes from the newly opened hole.

However, things have reached this stage now, and the remaining problems will definitely be resolved, it's just a matter of time.

Sure enough, it didn't take too long, and Lie tried to bind the newly opened hole with leather.

At first it was bound on the outside, but it soon became apparent that it didn't help.

So I removed the piece of leather, covered the hole from the inside, and then nailed it to one side with a copper nail...

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When the lame covered the last piece of animal skin from the inside to the newly opened hole, and nailed it once with copper nails, it announced the end of this big problem.

"call!"

Limp pushed the handle of the cork to push the cork forward. After the air was squeezed, the animal skin covered outside the first hole was blown away, and the air flow flowed out from there.

At the same time, the airflow generated by pushing the wooden handle blows the animal skin nailed on the inside of the second hole to the wooden board tightly, completely blocking the second hole, and no airflow goes out from here.

"call!"

With force on his limp arm, he pulled back the cork that had been pushed to the bottom.

As he pulled, the animal skin covering the first hole was firmly sucked to the wooden board, and no air flow came in from there.

At the same time, the animal skin covered inside the second hole opened, and the outside air flowed in through the opened hole.

Seeing such a scene, Hei Wa's face was full of smiles, his face was a little red, and his hands couldn't help rubbing them together vigorously back and forth.

Lame knew what Hei Wa wanted to do most at this time, so after pushing and pulling a few times, he simply handed over the wooden handle to Hei Wa.

Heiwa took the place of the lame, and after taking over the wooden handle from the lame hand, he couldn't wait to push and pull. As he pushed and pulled, his face became more and more rosy, as if drinking wine, the excitement Forget about it.

After having the wooden bellows made by Liao, Hei Wa gave up the plan to make a bellows out of pottery.

Because after comparison, he found that wood is undoubtedly more suitable for making this thing.

Of course, the one that I have just made now cannot be used directly, because it is just a test product, it is small, the wind that can be generated is not enough, and there are still many places that are not perfect.

However, after overcoming these technical difficulties, it will not be difficult to manufacture a large bellows.

Of course, the gourd is still in Jinguan City, and they haven't seen it yet, but this doesn't prevent them from possessing this skill.

As the lame began to get busy, the carpenter's room rang again, as well as the sound of saws sawing wood and planes scraping boards.

Time passed quietly between such noises, leaving behind scraps and sawdust all over the place, but at the same time, a large bellows also appeared in the carpenter's room.

Compared with the small experimental bellows before, this bellows which is several sizes bigger has changed a lot.

For example, there is only one hole for the air to go out, but it should be larger, and there are two holes for the air to be in.

However, the two holes are not as big as the one hole used to vent gas.

This is because the pressure is too high when the air is pushed out, and the animal skin is relatively soft. If the hole is too large, it is easy to press the animal skin out of the hole.

On the side where the bellows handle exists, a wooden board is also installed to seal the whole bellows.

Of course, there are holes for the handle on the wooden piston to move.

At the same time, the handle installed on the wooden piston has changed from the original one to the current two.

This is because in the process of pushing and pulling, Liao and Heiwa found that only one handle was installed in the center of the wooden piston, and the wooden piston would be easily skewed if the wooden piston was not handled correctly during pushing and pulling.

There is no such trouble if the two handles are installed one by one.

In order to facilitate pushing and pulling by hand, a short wooden handle, which is more suitable for pushing and pulling by hand, is installed at the end of the two handles exposed outside the bellows, and the two wooden handles are connected together.

In addition, the wooden piston inside the bellows has also undergone some changes compared to before.

The wooden pistons before were made purely of wood, but today's wooden pistons are covered with a layer of bare leather without hair.

This is mainly because during the process of pushing and pulling, Heiwa and Lai discovered that the simple wooden piston cannot completely close the gap between the wooden piston and the inner wall of the bellows.

The existence of these gaps makes when the wooden piston is pushed down, there will be a lot of wind running up through the gaps.

If the wind runs away from here, the wind going out from the opening below will be much reduced.

After wrapping such a layer of animal skin, this problem has been greatly solved.

Although it is impossible to block all the gaps and prevent the slightest bit of wind from going up from here, after such an operation, the wind going up has been reduced a lot...

Outside the main tribe of Qingque, a huge wooden bellows was constantly being pushed and pulled, making whirring sounds.

With the sound of whirring, the flames in the kiln kept rising. Even if the weather is already cold, approaching here will still make you feel anxious.

Compared with the simple wind gulu made by Han Cheng before, this closed bellows is undoubtedly more convenient and easy to use.

Heiwa held the handle of the wooden piston of the bellows with her hand, and pushed and pulled continuously, sending streams of air into the stove.

In such freezing weather, there was sweat dripping from his forehead.

Hei Wa didn't care about these things, she just pulled the bellows again and again, sending gusts of wind down the kiln, just wanted to make the fire inside the kiln burn more vigorously, as if she didn't know how tired she was.

Look at the blazing flame, Heiwa's heart is also burning...

The blowing bellows stopped breathing, and the flame gradually became smaller until it went out.

The top of the bright red coals gradually became dim, and there was no light, and some whitish ash emerged on it.

With the passage of time, the coals also lost their temperature, and the warm stove gradually became icy cold.

A lot of people gathered around the kiln, Wu and Dashixiong were also in this ranks.

Everyone looked at the kiln that didn't have much temperature, and then looked at Hei Wa standing by the side, all of them were full of anticipation and apprehension.

Heiwa's mood became even more excited. He had opened the kiln many times on weekdays, but now he felt that he had no way to start.

He shook his palm vigorously, took a deep breath, and went to open the kiln.

With his movements, the closed kiln door was opened, and fine dust flew out from inside, revealing some pure whiteness.

Hei Wa put her hands into the kiln where there was not much temperature, touched the utensil closest to the edge, and took it out.

When his fingers touched the utensil on the far side, Hei Wa's heart couldn't help beating violently.

Because the feeling from the fingertips is different from the pottery I used to touch.