The casting of bronze bells is much more complicated than the casting of tools such as axes.

The bronze bell that Ye Qing was preparing to cast is relatively large in size, which increases the difficulty of casting.

The bronze bell he designed is 3 meters in height and 1.6 meters in diameter. The thickness of the bell wall is not uniform. Different parts lead to different thicknesses. The thick places are seven or eight centimeters, and the thin places are only three or four centimeters.

Such a large casting piece cannot be cast using the lost wax method, so you can only use ceramic mold.

Ye Qing asked his tribe members to dig a large pit more than 3 meters deep on the ground.

In the middle of the pit, Ye Qing shaped the clay model with his own hands.

The shape of this clay mold is the inner contour shape of the bronze bell.

After shaping the inner mold, put the wood on the surrounding rack, ignite, burn it until it is hard.

The manufacturing of the inner mold is relatively simple, but the most difficult one is the outer mold.

A certain cavity needs to be left between the outer mold and the inner mold.

There is no way to make a whole external mold with clay embryos.

Therefore, Ye Qing could only divide the outer mold into pieces according to the ancients' practices, and finally assemble and splice them.

This requires high accuracy and processing techniques.

But this is not a problem for Ye Qing.

He has gold fingers, and the processing technique is not a problem for him.

Accuracy is not a problem with his careful calculation and the assistance of standard measurement tools.

Such a large bronze bell would be too ugly if it was bare.

Patterns are naturally needed.

The main pattern is Ye Qing selected the face pattern of the gods, humans and beasts.

However, the divine human and animal face patterns are not convenient for layout. He created the Taotie pattern that evolved from the divine human and animal face patterns in advance, and with some paper patterns, the pattern was considered a solution.

Such a meaningful creation is naturally indispensable.

What inscriptions are engraved?

With such a large area on the surface of the bronze bell, there are many inscriptions that can be engraved.

He felt that such a large piece of writing was still a bit difficult for him to create.

After thinking about it, he didn't care about that much and directly translated the Thousand Characters into oracle bone inscriptions and inscribed them on it.

This also has an advantage. This inscription can be regarded as a dictionary, a thousand-character text, and a thousand-character text without repetition.

As for the Thousand Characters involved in the Thousand Characters, he ignores many events and characters that have not yet appeared.

Can future generations understand?

Can't understand?

Let him go!

Whether it is a mystery of the ages, prophecy, or a visitor from another world, you can guess whatever you want, and do whatever you want!

Ye Qing is preparing to inscribe these patterns and inscriptions into positive texts, so the pottery model, patterns and inscriptions are all negative texts.

This is not a problem for Ye Qing.

After the clay plaques made separately were engraved with the intimate text, they were put into fire to make the pottery plaques successfully.

Next, these pottery patterns are spliced ​​and combined piece by piece around the inner range of the pit.

Ye Qing can combine precision machinery, and it is naturally not difficult for Ye Qing to combine these pottery models.

After the pottery film is finished, the most important thing is to smel bronze.

Of course, casting requires one-time casting and batch casting will greatly reduce the quality of the copper bell and may even break when used.

But the bronze bell is so big that there must be enough bronze solution that melts at one time.

For this reason, Ye Qing had to add many temporary furnaces.

Jin is six times, and bells and tripods are all six times, and the gold is one.

That is, the copper-tin ratio is 5:1.

With such a huge casting project, the workers of the copper smelting workshop started, performing their own duties, blowing, smelting, and ingredient...

When all the melted bronze solution required in the plan is melted at the same time, the next step is the most critical step, casting.

Casting requires rapidity.

The melted bronze solution cannot be cast slowly in pots.

Therefore, Ye Qing made several ceramic tubes that act as funnel, allowing more bronze solutions to flow into the ceramic cell cavity at the same time and perform rapid casting.

The casting went smoothly.

After a long period of cooling, it was the most exciting time to remove the mold.

Although the casting process was very smooth, Ye Qing was also nervous before seeing the actual product.

Tao Fan is a one-time job.

In order to remove the copper bell inside, it can only be destroyed.

Taikang stood in the pit with a big hammer and gestured at Tao Fan several times, but he was always reluctant to take action.

Tao Fan was made by Ye Qing himself, and it was very exquisite. The carved patterns and words made him extremely fascinated.

Such pottery was destroyed like this, which is naturally a pity.

It's a pity for the onlookers.

As Taikang gestured the hammer again and again, their mood also rose and fell.

In the end, Taikang knocked Tao Fan with one hammer.

Click!

Tao Fan was shattered in response to the sound.

After knocking the first hammer, Taikang also let go. He waved the sledgehammer continuously and knocked all the Tao Fan into pieces. Gradually, the golden copper bell was exposed.

The bronze bell was cast successfully!

"Wow!"

The onlookers unconsciously exclaimed.

Of course, the clan members of the bronze ware and bronze smelting workshop have seen many people, and are no longer surprised.

But now such a large bronze ware is still strong for them when it is presented to them.

It's three meters high, nearly two people's height.

The large bright golden color made their eyes blurry.

After the external mold was removed, there were still many burrs on the surface of the copper bell, and Ye Qing asked the tribe members to go down into the pit for polishing.

After polishing, it is also very difficult to remove the copper bell from the pit.

Such a large size copper bell weighs very heavily.

It will be very difficult to rely on manpower.

Therefore, Ye Qing asked the tribe members to set up scaffolding on the pit and install pulley sets.

This will save more effort and be much safer.

When the entire bronze bell was finally hung up and hung in mid-air, the tribe members were amazed again.

The dazzling gold color made them unable to look directly at it for a long time. The bronze bell was like a sun.

The casting location is in the copper smelting workshop, and the placement is in the tribe. There is another very important issue among them, which is transportation.

The distance from the copper smelting workshop to the tribe is four or five miles away.

Fortunately, the road has been built and is relatively wide, so it does not cause any obstacles to transportation.

Such a huge object is also extremely large in transportation.

In order to transport the copper bell, Ye Qing specially built a huge and sturdy cart, and there were more than a dozen cows that pulled the cart.

There are also many tribe members who are guarding the side.

The bronze bell was tied with many ropes, and the guardians pulled the ropes on both sides of the cart to maintain the stability of the bronze bell.

The transportation of the bronze bell also attracted the attention of the tribe members.

"Wow, it's so big!"

"What is that?"

"A magical artifact! Do you still need to ask? Haven't you seen such dazzling gold?"

"I know it's a magic weapon, but what is this magic weapon used for?"

“…”
Chapter completed!