Xiao Zhang took out the nails he had made in advance from the third layer of the small shelf car.

The legendary extreme firing method of nail burning was also officially intended to be used by Xiao Zhang.

Nail firing, also known as nail firing, is mostly used for stacked firing, and it is famous because of the Ru kiln, of course, in addition to the Ru kiln, there are many other porcelain kilns that will also use the nail firing.

The support nail made of clay is a bit like the shape of a mountain, the top is pointed and the bottom is round, and a different number of nails are placed on the round mat cake, and then the porcelain with full glaze is placed on the nail and fired, and the porcelain fired with the nail will leave a fine nail burn mark at the bottom, among which the nail mark of Ru porcelain is the smallest, which is a small sesame state of fragrant gray.

There are also kilns that are fired with nail firing, such as official kilns and brother kilns.

It's just that the nail marks of the official kiln and the brother kiln are slightly larger, and the color is iron black.

Of course, there are also two different methods of Ru kiln branch firing, one is to stick a few nails directly to the bottom of the porcelain, and the second method is more detailed, that is, the porcelain is placed on the mud cake with nails and then burned alone, and then the nails are knocked off after firing.

Of all the porcelain, the Ru kiln has the least glazed area.

In the process of firing porcelain, the glaze will melt at high temperature, and after chemical changes, it will become a translucent vitreous substance with high hardness.

Of course, in addition to nail firing, there is another firing method that can achieve full glaze.

That's another kind of foot-wiring process.

It is to buckle the porcelain and burn it, so that the bottom of the tire can also be glazed, and there is no trace of the size of sesame seeds left by the nail burning, but the mouth of the vessel is rough, and then the mouth is wrapped with soft metals such as gold, silver or copper to make it more beautiful.

This firing method was also within Xiao Zhang's consideration at that time, but such a full glaze had some metallic feeling, not the flawless azure color that Xiao Zhang pursued in his heart.

So it was abandoned by Xiao Zhang.

In fact, if you trace it carefully, the nail firing process is not created by Longquan kiln, because as early as the Five Dynasties, the Yaozhou kiln period in the north, the Huojia kiln in Sichuan has appeared in the firing method, so the folk rumors that the nail firing invented by the Ru kiln may not be completely accurate, but it cannot but be said that the nail firing of the Ru kiln is the most famous, and this sesame nail firing has also become a major feature of Ru kiln porcelain.

Therefore, Xiao Zhang must use the nail firing today, in order to embody or restore the major characteristics of Ru kiln porcelain.

The nails made of clay prepared in advance, and the mud mat cake are all ready.

Xiao Zhang found an angle to the glazed porcelain and placed it on top of the nails that had been placed.

The position of the support of this nail is not the bottom foot of Ru porcelain, but the contact surface of the foot.

After Xiao Zhang was placed, the small teacup was slowly placed in the kiln.

The second is the plain tire of the azure glazed bowl.

This plain tire bowl Xiao Zhang is very careful.

In fact, Xiao Zhang understood it in the morning.

When he was firing this azure glazed bowl for plain tires, he carved a poem of Qianlong imperial inscription on the original with a scraper at the bottom.

I thought it was just to have fun, but now when it comes to the game, Xiao Zhang knows that this will not work at all.

After the bottom is glazed, the poem will be completely covered, and there will even be flaws when fired, and Xiao Zhang detected it through the storage and firing skills in the system, which was written by Emperor Qianlong after getting this azure glaze.

The poem is silvery-white, and if I have to talk about it, it actually bears some resemblance to overglaze.

The overglaze color belongs to the representative porcelain of another dynasty, and as the name suggests, the color is outside the glaze.

It is just fired and added color.

Drawing is the same as writing.

Xiao Zhang also figured out this truth, so he made some adjustments to the plain tire bowl before, and mixed the most suitable color, planning to write a second time after the bowl was fired.

I don't dare to say anything else, as a top student in this major, Xiao Zhang's handwriting is still very beautiful.

Since childhood, he has copied the inscriptions of major celebrities, which can be regarded as a unique flavor.

The poem of Emperor Qianlong's imperial inscription is written in regular script, and the size of each word is all in Xiao Zhang's mind, and every seal position and the writing division of the word are also in Xiao Zhang's memory.

He had already tried it once before with a spatula, so Xiao Zhang was still very confident.

Therefore, after Xiao Zhang glazed this plain tire bowl, he also made a special choice for the position where the nails were placed.

Contrary to popular understanding, some people believe that this nail should be placed in the center of the bottom of the vessel, such as this azure glazed bowl, which has a total of five nail marks due to the large area at the bottom.

But these five nail marks are not perfectly evenly placed, if the poem of Emperor Qianlong is used as the direction benchmark, the bottom is close to the foot there is a nail, and the top is not close to the edge of the foot, but two are placed at one-third, and the last two are placed at two-thirds, although the five nails also form a circular cushion circle, but it can be clearly felt that these five nails are obviously placed below.

It is not known what exactly caused the placement to be somewhat crooked......

Therefore, Xiao Zhang's firing of the azure glazed bowl this time is also a perfect one-to-one replica, and the positions of these five nails are all selected.

This is also why it is said that the nail marks of Ru porcelain are the best, because the area is too small.

The Qianlong imperial inscription poems at the bottom of the original azure glazed bowl are all written on it, so each word is very small, and there is a blank space between each word, rather than each word being close to each word.

And these words are not all written on the nail marks.

It's all perfectly staggered.

And this nail mark is only a third of the size of a word.

What an amazing craftsmanship is this?

Xiao Zhang picked up the good nails he had prepared, pointed at the top and round at the bottom.

Then arrange it according to your heart's desire.

It can not only perfectly stagger the position of the original poem, but also ensure that the porcelain is stable, the center of gravity is reasonable, and it will not fall down during the firing process.

After doing all this, Xiao Zhang nodded with satisfaction and put this azure glazed bowl into it.

With four pieces remaining, Xiao Zhang continued to calmly glaze, support nails, and then place.

Almost half an hour, several plain tires were all glazed and put into the kiln.

Looking at these plain tires with simple shapes and strong colors, Xiao Zhang nodded with satisfaction.

Luckily, nothing went wrong.

Xiao Zhang wiped the beads of sweat on his head, and muttered in his mouth: "This is really the answer to that sentence, I just have to work hard, and leave the rest to the will of God." ”