A simple piece of bark,

Can you play so many tricks?

Just a slight makeover.

Just turned into a blower?

That's too awesome, isn't it?

saw Lu Yu's operation.

There was an uproar in the live broadcast room instantly, and all kinds of gifts appeared in an endless stream, and it took a long time for the commotion to subside!

But.

In the admiration, many sailors also said:

This kind of blower with built-in fan blades is too inconvenient.

You can only work if you keep rubbing your hands.

If you use this guy to heat up the charcoal fire, I'm afraid I can't do it if I'm not single for 50 years, right?

The most important thing is that it is tiring to watch!

Copper smelting is a big project, when does this have to be turned to be the first one?

Faced with the doubts of some viewers.

Lu Yu smiled knowingly.

Don't worry:

"Guys, this is just a half-finished product, don't worry, and then look down-"

said.

He turned around and found a few random branches of different lengths.

A small wooden frame in the shape of a "door" was built with bark ropes.

Placed on top of the blower.

Then, he took out the spindle he had made when he was weaving.

"Remember this spindle?"

"When I was building the loom, I said that the spindle could be used as a bow drill in addition to turning silk threads into hemp rope. ”

"If it is applied to the blower, the problem that everyone is concerned about will be solved. ”

Bow drilling, as the name suggests, is drilled with a bow.

It is mostly used to drill wood for fire.

This method of making fire should be one of the most convenient and fast methods of drilling wood to make fire.

Save time and effort.

It's incredibly efficient.

Much more powerful than a hand drill.

In addition, in other respects, bow drills can also be a perfect replacement for human labor.

Automatic blowers are one of them.

Between words.

Lu Yu held a spindle.

Remove the round stone tray underneath.

I found a bark rope and tied it at both ends, transforming it into a wooden bow.

Next, the tree rope bowstring is wrapped around the drill pipe of the fan.

They were attached to a small wooden frame.

And so it goes.

Just hold one end of the bow drill with your hand and keep pushing and pulling.

The fan blades of the blower will naturally rotate with it!

It's not just the wind that's always strong.

The most important thing is that it is much less laborious than simply rubbing it by hand!

After doing it, Lu Yu didn't say much, and demonstrated it to the audience on the spot!

in the picture.

With the bowstring retracted and released.

The fan blades in the housing sometimes turn forward and sometimes in reverse.

In a flash.

The whirring wind came out of the air outlet, and it didn't take long for the charcoal fire to blow red!

See this picture.

The audience's eyes suddenly lit up, and they left messages in the barrage:

"it!"

"This blower is invincible!"

"It's so ingenious!"

“666666666”

"The anchor's manual ability is really strong!"

"This wind power is the same as that of a five-speed electric fan!"

"Do you know so much upstairs?"

"Hahahaha!"

……

Soon.

After a large wave of gifts, Lu Yu simply thanked a few words:

"Thank you all for the gift. ”

"Actually, it's just a very simple automatic blower, and it's not difficult to make at all. ”

"The main structures, the fan blades and the shells, are all materials that are usually readily available. ”

"The principle is even more simple and clear, but any normal person can imagine it. ”

However, in order to perfectly apply the simple principle to daily production and life, in addition to being good at discovering, we must also dare to try. ”

"Because in the final analysis, it is the repeated attempts that have brought human civilization from poverty to today. ”

"How's that, brothers, this blower is interesting, isn't it?"

It's more than interesting.

It's just a TM show!

The simple principle that everyone knows, coupled with a few inconspicuous things to piece together everything, can play so many tricks.

It's really not good to be unconvinced!

This scene almost perfectly interprets the unique charm of primitive existence -

Use the materials you can make use of the materials in front of you to create your own world little by little!

……

Two hours later.

Lu Yu put the prepared blower aside.

I walked to the charcoal kiln, looked through the air vent below, and leaned over to observe the fire inside.

By this time, the fire above had completely spread to the bottom of the kiln.

The firewood below was red.

"Guys, it's almost like that......

Taking out a large piece of clay from the bamboo basket, Lu Yu continued:

"The next step we have to do is to plug all the vents with mud. ”

"Including the opening above the roof of the kiln. ”

"The purpose of this is to slow down the burning rate of the charcoal and make it completely carbonized, and when the time comes, as long as all the volatile gases have spilled out, it is done. ”

"The whole process may take a while, so we have to wait a while. ”

Taking advantage of this time, Lu Yu casually ate something and replenished his energy.

Then he started the stove again.

A fire was rearranged.

And take out most of the remaining mud.

Around the fire.

One by one, a small cylindrical furnace was built.

"Someone in the barrage asked, why do you have to make another furnace if you have an earthen kiln?"

After looking at the barrage, Lu Yu opened his mouth and explained:

"It's actually quite simple, bigger is not always better. ”

"For smelting metals, it is easier to concentrate the temperature in a small furnace than in an earthen kiln. Secondly, due to the limited materials we have, if we use an earthen kiln, more charcoal will be wasted, so it is necessary to build a small furnace separately. ”

Between words.

Lu Yu first smoothed the edge of the furnace with his hands.

Then a decently sized carbon outlet and air inlet were opened at the bottom.

The role of the air intake is obvious.

It is a hair dryer to connect to the blower!

And the role of the carbon outlet is also well understood.

There you have it.

After the refining is completed, the copper material reduced by charcoal fire and high temperature can be easily scavenged out of the furnace.

It is similar to the role of the charcoal kiln opening line.

……

Live here

With a blower, a furnace, mineral powder and charcoal, the preparatory work is basically over.

Next.

As soon as the charcoal comes out.

You can throw the ore powder into the furnace.

It was covered with charcoal and smelted.

When the time comes.

After continuous refining at high temperatures, the copper contained in the mineral powder will naturally be gradually reduced and turned into copper material.

After that, the copper is simply melted into liquid copper.

Pour into the mold.

You can change it into the shape you want!

For example, axe blades, knife blades.

Even arrows are no longer a problem.

……

Time flies.

In the blink of an eye, it was two o'clock in the afternoon.

The time to wait for the charcoal to come out.

Lu Yu was not idle.

I have been chatting with the audience without saying a word.

It wasn't until the green smoke from the mouth of the charcoal kiln stopped volatilizing that he stood up and walked over to check.

Arrived at the kiln.

He first touched the temperature of the kiln wall with his hand.

Then, he probed the fire on the roof of the kiln.

After a long time, he said:

"Friends, it should be almost burned. ”

"Without further ado, let's open it first and see what the situation is inside-"