The Lord Lord left some craftsmen and burned sand in the castle.

This time, the lord burned sand not to get the glass slags, but the elves had shoes to wear.

The Lord this time burned real glass, the whole piece, he burned it, burned it, and was sweating profusely. If you want to get the whole piece of glass, it would definitely not work to cook chickens just by burning it, and it must have process steps.

The raw materials for making glass must be quartz sand, soda ash, limestone, feldspar and other small stones. The lord first asked the craftsmen to smash them with wooden pestles.

As much as possible, this treatment will separate the impurities in the raw materials as much as possible from the pure raw materials needed for burning the glass, and the quality of the burned glass will be high.

The second step is to fire the raw materials into the kiln mud bowl and heat them at high temperature. During the firing process, the Lord of the Lord knelt on the ground and observed through the fire eyes that the temperature was too high. The Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of the Lord of

The craftsmen felt sorry for the Lord and advised them one after another: "Lord, don't look like this..."

"Don't make a noise!" The lord could not stop observing because he had to keep observing the state of the melted material.

The burned sand powder must be uniform and without bubbles, and become a pure liquid glass state. The liquid glass in the bottom or around and in the middle is the purest.

The Lord stared at him for a full stick of incense and his eyes turned red. The craftsmen were all infected by the Lord's seriousness. They remembered all the steps of burning the glass carefully, and refused to leave any details.

They must master this technology, so they cannot let the Lord lose his eyes in the future.

Finally, the Lord Lord stood up and rubbed his eyes. He rubbed and shouted, "Stop the fire!"

The craftsmen turned off the fire and clamped the kiln mud bowl with long iron pliers. The liquid glass was still red, but as the temperature dropped sharply, it began to turn black and hard. This step was not the end. It was another incense stick. When the liquid glass completely cooled, the lord clamped the whole piece of cool and hard black glass with iron pliers, allowing the craftsmen to reignite the flame of the furnace and carry out the last step of the process - heat treatment.

This time the furnace did not have an air outlet, and the temperature was controlled at around 1000 degrees Celsius. Therefore, the glass did not melt, but it could deform and become soft.

When the solid glass becomes soft, Chen Zhen clamps it out, puts it on the felt, hit it with a wooden hammer, and shape it.

During the knocking process, the black impurities on the outside peel off layer by layer, gradually revealing a crystal clear object.

The craftsmen were shocked and exclaimed: "Lord Lord is simply a saint!" To make such a large piece of crystal clear thing, it is tantamount to alchemy for these little craftsmen who have never seen the world. How could they think that the crystal clear thing was refined with sand before following the Lord Lord?

This second step of quenching not only removes impurities on the glass, but also eliminates uneven stresses inside the glass, making it completely crystallized.

The structure of glass is more balanced and perfect. Such glass is the most suitable for making lenses.

The lord knocked and beat with a wooden hammer, burned and forged, and got two lenses as big as a palm, a convex lens, and a concave lens.

The leaders did not know what this thing could be used for, but the Lord knew it, and this was the basic material for making telescopes.

Chen Zhen originally wanted to make a telescope with Kepler structure, but the imaging of this telescope is upside down. If you want to get a frontal image, you have to make an extra prism. He thought it was too troublesome, so he simply made a Galileo structure. Telescopes with this structure are generally used for toys. Chen Zhen improved the design drawings of the toy telescope with Galileo structure in his previous life.

The Galilean structure only requires two lenses, a convex lens with a smaller magnitude as the objective lens, and a concave lens with a larger degree as the eyepiece.

Such telescope imaging is directly a true image.

He needed to polish two lenses, one large and one small, and then picked up the sand and grass and grind it carefully.

The craftsmen came around to take a closer look, but were attracted by the lord's white fingers, which were slender and straight, as beautiful as a woman's hand.

The craftsmen blushed when they saw this. With such hands and such rough work, Lord Lord is so hard!

Chen Zhen said to them, "Look at it well, you have to do it yourself in the future. I will do this one. I think my hands hurt so much..." Sand grass was really tiring, and it was so hard that it was glass. The Lord's forehead was sweating profusely, and his hands quickly bubbled.

But he endured the pain, polished both lenses, threw away the sand and grass, covered his fingers and grinned his teeth and inhaled: "Hiss...ah..."

The craftsmen felt so distressed that they all gathered up to pat them and asked about their well-being.

The lord put the two lenses into his pocket and thought to myself: It's not a big deal to do it yourself, it's too much trouble. I spent some time to win the people's worship value and let the workshop system silhouette be prepared for me...

Thinking of this, he drew the design drawing and went to the workshop system room. He gently placed two lenses on the ground, put a few iron bars, and thought to himself: Workshop system, make me a telescope, let me tell you, I have to give me a discount if I have prepared the lens myself.

The workshop system responded: [Lord, your lens is simply scrap... I'll help you process it for a little, it's free.]

Chen Zhen thought to himself: Good, Chen Ergou, you dare to look down on my skills...

[Lord, look at you, you gave me such a dog name. If you want to say this, I will have to collect you 50 more worship values ​​from the people.]

He made Chen Zhen angry and thought to himself: I was joking with you and took it seriously. He was so mean...

The workshop system deducted Chen Zhen’s 75 points of worship, took away the Galileo structural telescope drawings and all materials, and threw out an well-made iron pipe carved telescope. Chen Zhen steadily caught it and thought happily: You Chen Ergou, be careful to throw it away you...

[Lord, I enchanted this telescope. Don’t ask me how I did it. I also depend on my luck. It can have night vision!]

When Chen Zhen heard this, he jumped three feet high with joy and burst out excitedly: "Chen Ergou, you are really my biological dog!"

Chen Zhen ran up to the city wall in a crazily with his telescope in his arms. When he came to the north, he picked up the telescope and put it in front of him and looked at it! Wow... he could see so far! Even the figures of the craftsmen who were walking back after building the watchtower were clearly visible.

There was a button on the telescope. When I pressed it, I really saw night vision. This guy gave Chen Zhen a green one and rubbed his eyes.

He raised his sight and found that the telescope could see the figure of the entourage standing guard on the farthest watchtower. It was simply a magical tool.
Chapter completed!