Um?

any solution?"

Liu Deli suddenly became a little curious when he heard the words.

In his view, the way to make flat glass is to burn the glass into a liquid state and pour it into a large "dish".

After that, use a stick to roll it out like a pie, and you're done!

Although the corners are not too neat, as long as the sides of the "plate" are relatively regular and the number of rollings is more, there should be no major problem.

If there is any problem, just cut it with a glass knife.

However, there is currently no glass knife, so I can't make it for the time being.

But I didn't expect that Liu Kun actually has other methods.

"The method you mentioned is the method used by large glass factories.

A small workshop like ours can't be used at all~"

Liu Kun shook his head and told the truth directly and mercilessly.

"Because the glass cools very quickly, once it cools, it won't roll.

It needs to be heated again to soften.

But, how are you going to soften it?

Put the whole plane in the stove and burn it?

Or put a stove under the surface on which the glass is placed, providing constant heat?"

"this......

It doesn't seem to work well."

Liu Deli said something embarrassed.

"I feel that our conditions are not very good, if it is a factory, it is relatively simple.

It seems inconvenient for us here."

"Yeah~

So, we can't use this method."

"Then in what way?"

"You guys help me on the side, you'll know in a while."

Liu Kun did not specify, but started to operate.

First, a new stove was built again next to the stove.

Glass-fired furnaces are quite special.

They will open a hole in the center of the stove to make it easy to take out the glass and soften the glass at the same time.

The newly built stove by Liu Kun is also quite special.

It is a cuboid stove.

Opening on one side of the stove, this opening is rectangular.

The length is not long, but the width is very wide.

The fuel is placed below, and when there is no coal, only charcoal can be used.

The top is a thin double-layered slate.

The first layer of slate is fixed on the stove, but the second layer of slate is equipped with a handle, which is relatively small and can be pulled out from the side of the opening.

So, a single stove is ready.

After that, Liu Kun grabbed a large amount of quartz sand and started firing it in a glass-firing furnace.

In a short time, these quartz sands have been burned into a liquid state.

Then, using a blowpipe, stick this large piece of glass to the head of the blowpipe and take it out of the stove.

Start rubbing on the iron rod standing on one side and start shaping this piece of glass.

Finally, the glass was turned into a cylinder with a relatively large head, and then it stopped.

Continue to put the glass in the stove to fire.

After it's softened, take it out and start blowing toward the blowpipe, while blowing, while rotating the blow stick in your hand.

Glass blowing is not an easy task.

Because the pipe is long and the glass liquid is thick, it is not easy to blow, so it needs to have a strong lung capacity.

For example, Liu Deli and three people can't blow glass well, but for Liu Kun, a "human-shaped beast", it is trivial.

After a while, he blew the glass in his hand into a cylindrical shape that was not very regular.

The section of the cylindrical shape near the blowing rod has air, which is thicker and rounder.

But there was still a cloud of red-hot glass at the top.

But Liu Kun didn't care, and continued to blow while continuing to spin.

It didn't stop until the glass was blown to a certain extent.

He put the glass in his hand into the ravine that had been reserved for a long time, and began to shake it gently.

Shake it twice, then spin to blow some air.

The irregular cylindrical glass gradually changed its shape under the constant shaking of Liu Kun.

The pure glass at the top continued to extend outward, and the part that was blown up was getting bigger and bigger.

After the glass was almost hard, Liu Kun stopped and put the glass into the furnace for firing again.

However, because the side of the glass becomes larger, it is not possible to put all of it in.

Only the topmost part can be fired in the furnace.

After the topmost piece of pure glass was softened, Liu Kun took it out and continued to blow and spin it.

That glass is getting longer and longer, and there is less and less pure glass at the top.

Do this over and over again.

In the end, the glass in Liu Kun's hand had turned into a cylindrical glass bottle of uniform thickness.

And the pure glass that didn't blow up at the top also disappeared.

turned into an arc-shaped top.

This completes the first steps.

Liu Kun put the blow stick on the stand and let the glass cool naturally.

"You should know how to do it, right?"

"understood!"

Hu Xin spoke first, with an excited expression on his face.

"The two ends will be cut off, then cut from the middle, and finally heated and baked until soft, that is flat glass!"

"Yes~"

Liu Kun nodded and put the basically cooled glass on the table.

"That's how flat glass was made before the factory made it in large batches."

"But the boss."

Liu Deli scratched his almost bald head and asked with some doubts: "We don't have knives!

How do you cut it?"

"stupid!

Ever played a game of cotton thread cutting a beer bottle as a kid?"

As Liu Kun said, he took out two cotton threads soaked in oil and began to wrap them around the top and end of the glass cylinder.

"Uh......"

Seeing this, Liu Deli suddenly showed an expression of sudden realization, and then scratched his head in embarrassment.

He felt old.

Not only is my head going bald, but my brain is also stiff.

Liu Kun wrapped the cotton thread and set it on fire. After burning for a certain period of time, he poured cold water on it.

Immediately, the glass was cut.

Then, in the same way, the glass cylinder was cut open and turned into a cylindrical flat glass.

Finally, heat it in that special stove.

After it softens, press it gently with an iron rod, and finally take it out and it is a flat glass.

Although there are many transparent bubbles in it, it can still be used as a window.

"Wow!"

The three were amazed at the same time.

"We need glass!"

"Okay, come and help me do it together, so hurry up."

"I'm coming!"

......

While Liu Kun and others were making glass in full swing.

Xiang Mo shook his head sadly.

"How could this happen!"

"Let's go, ask your brother~"

Su Xi patted Xiangmo on the shoulder, then pulled her and started looking for Liu Kun.

No way, this is really bad!

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