Todd rubbed his sore eyes.

Using perspective for a long time, looking at the dazzling metal solution in the furnace overwhelmed his eyeballs, and even his tear ducts were roasted by the heat, so that not a single tear could be shed.

In my previous life, I often saw novels and movies and television, those time-travelers casually brought scientific and technological achievements and industrial inventions into a new world, everything seemed so easy and comfortable, but the real hardships can only be experienced by actually trying.

In front of him is already the third furnace of slag smelting.

For the first time, due to the unreasonable construction method of the furnace top material, the bearing point was shifted, and finally caused a local collapse, which directly polluted the silver-lead solution, and had to be scrapped and restarted.

The second time, due to the lack of professional temperature monitoring equipment and the unskilled operators, the furnace temperature fluctuated in a short period of time, and the material of the furnace wall was directly caused by the "explosion furnace accident" due to its low temperature resistance ability.

After the first two failures, the craftsmen and apprentices of the smelter, even Huggins and Edgar, had completely lost hope. Some persuaded the monks and apprentices to give up their attempts, some took out their crosses and began to pray to the Father, and some even packed their things and planned to go home to sleep.

However, the smelting continued, and Todd's "dictionary" never gave up the word, both in past and present lives.

From the first opening of the furnace, the smelting continued until eleven o'clock in the middle of the night the next day. In the stillness and darkness of the night, only the smelter of the Monastery of San Sidro still shone brightly.

A full 30 hours have passed.

In his previous life, the soul who was accustomed to staying up late working in the laboratory gradually felt powerless and on the verge of collapse in this young body. But now Todd can't stop, and the whole "Gray Blowing Three-Step Method" has reached the last moment.

There were only Todd, Huggins, Aiden Comb, and a few of his apprentices in front of the furnace.

Observing the situation inside the furnace with perspective, Todd motioned to the helpers to first add a small amount of saltpeter to the lead-silver solution to accelerate the oxidation of impurities such as copper, and then evenly sprinkle a thin layer of "bone meal" (the main chemical components are calcium and phosphorus) made from animal bones, and adsorb the residual slag before removing it. Finally, a layer of charcoal is added to the silver liquid to cover it, the furnace temperature is further raised to 900 degrees Celsius, and the fire is extinguished to remove the large amount of oxygen absorbed in the liquid, and finally the finished solution is slowly poured into the casting mold.

At four o'clock in the morning, the bell of the monastery for morning classes rang everywhere, and the chanting of the monks rang out in the main hall. At the foot of the mountain, a group of soot-faced, exhausted people witnessed a great success.

It took 35 hours, two failures, and about three tons of silver ore slag. A 4 cm long, 3 cm wide silver ingot, weighing 23.5 grams has finally been baked.

"Cheng ...... It worked!"

The first voice to sound belonged to Huggins's big voice.

Soon, the sleeping Edgar and other craftsmen and apprentices rushed over to hear the noise.

Touching the precious metals that still carry the temperature in his hands, Todd has a lot of feelings, from mineral selection, chemical equations, industrial design, equipment drawings, to preliminary preparation, furnace body transformation, three smelting, two failures, and finally the finished product. It was a hard-working, yet rewarding experience.

However, when it comes to being in a good mood, someone is more excited than him.

Huggins, who gambled his entire net worth on this small silver ingot, picked up this baby bump, completely devoid of his former calmness and composure. He closed his eyes, rubbing his rough face and feeling the cold touch, and from time to time he could hear a burst of comforting moans from his nose.

Edgar behind him jumped up and down, anxious like a monkey, grabbing the man's shoulder, kicking the big man's knee with his leg, and shouting, "Hey, let me see, let me see!"

Ignoring the two yelling guys, Todd had more important things to do.

Calculation of smelting proceeds.

The entire silver refining process took a total of 35 hours, and the time it took to remove two failed attempts, plus the time spent removing the ash, repairing the furnace and blowing the plate, could have been refined about six times a week. Assuming that the silver refinement value is fixed each time, the weekly income is about 140 grams of silver ingots.

Aside from the "holy coins" of the Church used in the Papal States, the three most commonly used coins in the southwestern countries are generally the following: "Jin Xu" made of gold, "Silver Moon" made of silver, and "Bronze Star" made of copper, with a ratio of about 1:10:1000. The weight of the silver moon is about 2.2 grams, which means that the weekly smelting income is about 63 silver moons.

Of course, the final net profit is about 38 per week, excluding the purchase of fuel, equipment maintenance, spare materials, black market exchange fees, and the wages of the apprentices.

Huggins, Edgar, and Todd disagreed on the final expenditure, with the former believing that there was no need to spend extra money on craftsmen and apprentices, but the latter holding on to their point of view, not only giving all craftsmen and apprentices double the standard salary, but also converting the meal allowance into coins and adding it.

The end result was naturally that the craftsmen and apprentices were grateful and happy.

After instructing the people, leave the hands to take care of the stove. Covered in soot and tired, Todd fell to the ground from exhaustion on the way back to the monastery. In the end, Huggins picked up the monk's apprentice and took him back to the monk's dormitory, where he lay on the bed.

When he got to his room, Todd slept in the dark, straight from early morning to late at night, oblivious to what was happening on the other side of the monastery.

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The moon climbed up the treetops, and the early spring night insects made their first chirps.

Master Myris sat against the fireplace, facing south, just north of the room, looking in the direction of the door, motionless.

He has always been thrifty, and he rarely lit three candles in the room, one on the desk, one by the main door, and one in the stairwell.

Eight bells rang from the monastery's bell tower, signifying that the light had come to an end and darkness was coming.

A faint gray mist drifted into the room along the gap in the window, converging, condensing, and forming on the floor, and a figure slowly stood up straight from the misty smoke.

Master Myris looked at the faces that appeared in the mist, his body did not move, his face was expressionless, he raised one hand and pointed to the opposite main entrance, and said in a deep voice: "You should know that the Father teaches His people how to use doors and windows, which is the true lesson of distinguishing between civilization and barbarism!"

The man in the fog gradually stabilized his posture, his pale and sickly face did not have a trace of blood, and his slender fingers took out a charred broken sword from his bosom, and hissed, "Mr. Byrne, dead." ”