The minting itself was not as difficult as one might think, but it was certainly not an easy task to achieve the level that André demanded.

Paper money has already been excluded in the first place. Although the elves already have a fairly proficient papermaking technology, their technology varies significantly depending on the paper produced by different paper mills. If you want to achieve the desired texture of the children of the abyss, the development cycle and production cost are very distressing problems in the first place. The elves' papermaking technology has undergone thousands of years of continuous improvement since its birth, and Andre, who knows nothing about papermaking technology, cannot provide them with any effective advice. In the past, the chemical industry was entirely based on the petrochemical raw materials collected by the industry, and in the current world, those things are still only the empty reverie of alchemists.

Compared with paper money, the service life of metal coinage has incomparable natural advantages in the first place. What's more, under the catalysis of Andrarui, the forging and metallurgical processes of the limestone clan are going through a period of blowout development. After seeing Andrarui's steel weapons, there are more and more ambitious blacksmiths looking forward to joining Andrarui's forge workshop. During the period when the dwarven stonemasons were accelerating the expansion of the blacksmith's workshop, the idle blacksmiths were just able to be summoned by André to concentrate on the minting process of coins.

If you just want to mint coins that work, it may be easier to use methods such as sand molds. Similar methods are often used in ancient coin minting and in modern times when casting aluminum. Although the mold is simple and reusable, its efficiency is not excellent at all, and it can be said that the efficiency is far from the industrial production expected by the children of the abyss.

On top of that, coins minted in this way inevitably produce a large number of rough sand holes and pores on the surface, which is a far cry from the art grade coins that André has publicly promised!

As a result, the project was already in a difficult situation almost from the start.

"Your Highness, why do you have to make coins out of metal, and though mortals like to make coins out of metal, it is not our dwarves' job to make metal objects so delicate. Barot Limestone, returning from a visit to the Limestone Clan's new territory, tried to offer his opinion.

The dwarven blacksmith's creations are naturally based on quality and reliability, and the rugged appearance and heavy weight are the golden signs of "dwarven forged". Even if there are occasional finely crafted pieces, they are rare heirlooms that have been rare for masters for several years. If you follow this efficiency to make coins that need to be mass-produced...... Then it's better to wash up and go to bed early!

These dwarves are not entirely to blame, as they have never even heard of the concept of industrial production and molding. For Andre, the key question is how to ensure the reliability of the mold and the accuracy of its surface beyond the technological level of this era!

It's not that there are no ideas, it's just that it needs to be able to fit the current level of craftsmanship of Garlandia...... Andre was frustrated that no one could discuss with him which option was more feasible, so he could only frown and ponder alone.

"Isn't Andrarui's pottery the most unique craft? Why don't we make some pottery coins, no one else knows how to make pottery anyway." Seeing that his newly recognized people were silent, Barot had to do everything he could to liven up the discussion.

"Pottery is not a difficult thing to put it bluntly, as long as you have seen it roughly, you can figure it out by yourself with any mud and kiln......" As the supreme executor of pottery skills, Garuda naturally understands that the technical level is far inferior to the forging process handed down by the dwarves, not to mention that Andrarui's pottery is also mainly practical, if you want to describe it in a very intuitive sentence - their surface looks not much different from dried mud.

"Okay!" everyone gathered around the conference table, and Andre, who suddenly got up, startled everyone, "It's decided!

"Your Highness, please think twice......" As a master of fire control in the pottery process, Yan Demon suddenly felt a lot of pressure.

......

In a narrow sense, ceramics refer to utensils made of sintered mixtures of alumina and silicate. And the scope of ceramics in a broad sense is larger...... Including Andrari's pottery, bricks, tiles, and porcelain can all be counted in this group. Depending on the composition and the difference in the internal microstructure due to the sintering temperature, its physical properties can be said to be very different.

There are even many industrial ceramics that have completely exploded the special alloys known to Andre in terms of hardness, high temperature resistance, corrosion resistance, wear resistance and other properties in addition to toughness!

Of course, Andrey could not have set himself such a high standard. The manufacturing process of technical ceramics is often accompanied by high-temperature, high-pressure processes and various gels, adhesives, additives...... To put it simply, under Garlandia's existing conditions, it will definitely be much more difficult than creating a sacred weapon that has been handed down from generation to generation!

As mentioned earlier, the selection of materials is very important in the first place to manufacture a ceramic with suitable properties. In modern industry, even products such as glass can barely be counted into the ceramic industry, so how can we choose a suitable material within such a large range?

This needs to rely on the masters of playing with stones, the team of stonemasons of the Limestone Clan.

Yes, that's right!

There is nothing wrong with the idea that ceramics are fired from "soil" in most people's minds. But the reason is just because the ceramics commonly used in life do not have such high requirements for their physical properties.

Does anyone have a porcelain bowl that can't be broken?

Because the cost of making that kind of ceramic tableware is so high that no one has the habit of eating while breaking the bowl. If you accidentally break it, you can buy another one, and for ordinary people, cost performance is the first choice.

But that was not Andrei's choice. He had already made a tentative decision to use a combination of smelting and stamping to make Andrarui's first metal coins. In order to achieve the level of craftsmanship he needs, he first needs ceramic materials that can withstand high temperatures. Then, in order to ensure the integrity of the mold and its service life during the loss process of thermal expansion and contraction, the material also needs to have ultra-high hardness and superior resistance to wear!

In order to meet the requirements of the Children of the Abyss, the dwarves of the Limestone Clan even enumerated dozens of precious gems. Yes, in previous lives, there were actually many natural gemstones whose main ingredients were natural mixtures of metal oxides such as alumina, but because of their microstructure and the presence of different impurities, they showed a colorful and attractive appearance.

Many gemstones that look completely different can even have the same main composition. For this reason, there is no need to blindly pursue its own high performance in the selection of materials. In the case of similar physical properties, common and inexpensive materials will be more in line with Andrew's requirements.

Some people may wonder if ceramics should not be made of clay, and why choose stone as a raw material!?

In fact, the main component of clay is also ore particles that have been refined by flowing water and weathering, and its formation is similar to that of sand, but its origin may be traced back to a much older age. The main reason for choosing clay as a raw material is because it is easy to process, plastic, semi-dry and carved, and fully dry and grindable, and it is used to make daily necessities and artworks, and its excellent plasticity is naturally irreplaceable core advantage.

But clay has its own limitations. First of all, the physical properties of the sintered material depend largely on the clay composition of the excavation site, and if you are unlucky, it is likely that the performance of the raw material within a few steps will be different after sintering. In other words, the specific physical properties of clay after sintering are not something that Andrei can easily control.

In fact, the process of firing ceramics is not as mysterious as people think...... There may be only a small chemical change in the process, but the large change in properties is actually only due to the fact that the fine particles in the clay melt and then recombine into a whole - this is actually a relatively simple physical transformation process, and the chemical composition of the clay itself does not change at all. It's like a winter snow that melts into water and finally freezes into ice.

That is to say, as long as you choose the right stones, polish them into a fine powder and then sinter them into a whole at high temperatures, it can also become an excellent ceramic product, and because its raw materials are taken from a whole stone of guaranteed purity, its strength and high temperature resistance are completely controllable to some extent after sintering.

The dwarven stonemasons then had to draw in more than half of the water grinding tools used to polish the white stones, which they called steel and jade, into a fine powder that could meet the requirements of the children of the abyss......

Ten days later, the steel and jade powder processed with the strength of the clan was only a small bag of less than twenty catties.

It took half a month to process a bag of material that could be used to mint coins!? The dwarves only felt that this inexplicable son of the abyss had run out of skills, and even such a ridiculous idea had to be tried by the people. A dozen catties of fine stone powder is naturally not enough to mint coins, but if it is used to make a stamping surface for molds, it is more than enough.

Yes, Andrey's choice of coinage materials has never wavered from the beginning, ceramics are mere molds, and metal coinage is his ultimate goal.

For such material, the children of the abyss are very satisfied. The fact that the stonemasons of the Limestone Clan did not improve their work efficiency much with all their might, which shows that the hardness and wear resistance of this stone are very ideal! For this reason, the Children of the Abyss specially prepared two hundred and fifty cans of distilled liquor as a thank you for their strong support to the Limestone Clan.

The next step to consider is the binder, which is simple for ordinary clay...... Just use water. First of all, it is necessary to ensure that it will not crack easily in the sintering process after bonding, and then the adhesive remaining in the ceramic can not affect the excellent physical properties of the ceramic itself.

"What should we do next?" said the clueless dwarven craftsman, distressed to the Children of the Abyss.

"Let's try it slowly!"

I don't know why, this simple sentence gives many craftsmen the illusion that they are powerless.

First of all, thank you for the generosity of red, black, blue and gold. Secondly, the problems of this book seem to me to be quite numerous. First of all, because the outline has already been set, the first and second volumes are mainly based on territorial development, and there are not many fierce conflicts and climaxes, and secondly, because of their own level problems, they have not been able to raise some details to a satisfactory level. These are all obvious shortcomings of myself as a newcomer, and they belong to my own problems.

After a period of reflection, I decided to make some of the conflicts in most of the previous chapters more intense without using a big knife on the main story. Although I am also disgusted by the repetitive stepping on the business model and the anti-big face rhythm, I have to say that there is a certain reason why it will be so popular. If the writing is not good, it will naturally make people look aesthetically tired and boring, and the description will be nuanced and the rhythm will be relaxed.

Although I don't have such lofty ideals at the moment, I still hope that after the end of this book, I can at least barely reach the level of a second-rate writer, above the level.

In addition, I have a regular job, although the work intensity is not large, but it is not so simple to use working time to create. Most of the creations are using their spare time.,Plus the writing is rusty.、No experience.,If you want to insist on two more6K, it will inevitably break the change.,So continue to keep the turtle speed up.,When can you have a good time, then consider the amount of updates~~~