The New Civilization of Witches

Chapter 69: Cannon System

Four days later in the backyard. Two deep holes were dug in the ground. Each hole is circular in shape, and the deeper it is, the narrower the radius.

At ground level, the diameter is about 40 cm but the deepest part is only 26 cm wide. These holes were the prints that Roland wanted to use to produce his cannon prototype.

The inner wall of the hole was baked and hardened by Anna. He burned it for so long that its surface was flawless, like a shell.

He started to harden the shell at the bottom and took all the air bubbles and trash with him as he moved upwards.

During history, there were several sizes of cannons; roland roughly remembered that the so-called six-pound and eight-pound cannons got their name from the weight of their shells.

Roland's first step to producing the cannon was to produce several twelve-pound balls,

and then calculate its size according to the diameter and wall thickness of the cannon shell.

In the absence of measuring instruments, Roland only created his own custom standards.

He took out an iron bar and separated it into several small pieces with the smallest phalanx width of his ring finger, hoping to get close to a centimeter.

After that, he made many copies of the iron rod. The diameter of a twelve-pound iron ball, when measured with a new iron ruler, is about twelve centimeters.

Therefore, the thinnest wall of the shell should be four centimeters, and the back used as a detonation chamber should be seven centimeters thick to prevent self-explosion.

As for the length, there were many different types of cannons, such as the cannons used in warships, modern tanks, or antique front loading artillery, so he really did not know which one to choose.

Considering that the shorter the tube, the lighter the cannon and the more material it can hold.

Roland nonchalantly waved his hand, I will only build a cannon with a length of 1.5 meters; if the test results are unsatisfactory, I will adjust the length later.

When the cannon was first invented, it was built with a wooden core and reinforced with iron rings, like a barrel.

Roland still remembered that this type of cannon had its own risk of air leakage and explosion, so it would be best to form the body of the cannon completely at once.

When drilling a cannon with a steam engine, there was no difference in producing a 6-pound cannon or a 12-pound cannon.

The so-called calibers are simply a concept to distinguish their size. If the muzzle is larger, it becomes 12 pounds.

Everything beyond that cannot be used as field artillery. But the exact weight of the bullets or cannonballs is not important as long as they shoot in a straight line.

After all, he only got ideas from history and did not imitate them. Roland took a deep breath, then he gave Anna the signal to start

"start now". The latter nodded his head, took out a steel rod, and placed it over the hole.

Under the power of its green fire, the bar quickly turned red and began to melt, forming a small waterfall of molten iron that flowed into the hole.

The molten iron glows red-orange and becomes so bright that it is hard to see. To protect Anna's eyes, Roland specially prepared a support frame at the edge of the hole.

He only needed to take a good position first and then he could lean on the support frame to produce the cannon without looking into the hole.

Ingots are usually used only slowly. After all, Anna herself cannot start the era of hot steel, but producing small batches is not a big deal –

the most difficult problem to solve was maintaining the temperature at the same rate, but with Anna's help she was able to produce a small amount of high-quality steel.

This was also the reason why Roland dared to produce a five-meter-long cannon. Compared to cannons made of bronze or iron,

cannons made of steel were obviously much stronger. Even if Roland made the cannon in the wrong size, the chances of it going to explode on its own were much smaller.

The amount of molten steel continues to increase in the hole, but the number of bars is also decreasing.

Seeing this, Roland could not help but feel the heartache. In the end, he could only wait until the time he could build some tall kilns in his territory.

The number of steel and iron bars a noble could produce was one of the criteria used to measure strength and strength all along.

Unable to accept this humiliating treatment, Anna showed some resistance at first, but after a few seconds she obediently closed her eyes and let Roland take care of her.

His face shone red from the molten steel light, causing Roland to think of biting him.

However, as he looked further down his neck, an open and slender collarbone entered his gaze. The two were so close that Roland could smell her gentle scent.

“Ahem, well ...” Roland timidly picked up the handkerchief while trying to control his agitated emotions,

“that's everything for today. Nice work! I'll tell the kitchen to specially prepare a pepper steak for you. ”

Now is not the right time, Roland thought, if I take action now, everyone will think that I am taking advantage of a vulnerable person.

I had to wait until she was completely free.When Anna opened her eyes, she could feel that Roland had wiped all of her sweat away,

but his face looked more red than before. He gently nodded to Roland and thanked him.

*

In the next few days, Roland traveled between the castle and the North Slope Mine several times.In addition to the cannons, he also needed to make boring tools in sufficient quantities.

The production methods of drill tools for rifle barrels and cannon barrels are very similar. Once removed from the mold, Anna will reheat it, so that it can be treated with a hammer.

It was very different from producing ordinary knives. At a glance, it looked like a blunt iron rod.

However, the only difference is that it has a crack in its head, which is used to remove metal debris.

In the final step, the iron was extinguished to increase its hardness. The production method is very different from modern high-precision drills.

After all, Roland only needed them to drill for iron. Considering their high wear rate,

Roland and Anna produced five boring tools in a week. Thanks to this drilling tool and the use of steam engines for drilling –

the production of barrel guns increased rapidly from 2 every month to ten every day. Once everything is ready, the miners will dig up two cannon embryos,

then clean the garbage from the surface and transport it to the car repair shop. For the production of these two cannon embryos, almost all of Roland's steel bars were consumed, a test that was priceless.

So Carter and his entire bodyguard were in charge of the transportation protection, which made the Knight Chief feel a little excessive.

Who would steal so many inflexible items?

According to the Prince's requirements, the blacksmith began to polish and flatten the appearance of the embryo, after the grindstone.

After they were finished, the embryos were sent to the castle's backyard. At this moment they only looked like two solid iron rods with a dark gray and round appearance, emitting a heavy metallic luster.

Roland could not wait to start drilling, so with Carter he brought the embryo to the right place, and placed the end of the cutting head on the top of the steel rod.

With a face full of hope, Roland pulled the valve on the steam engine. The drill tool slowly began to operate, but not long after that it was running at a fixed speed.

"Start!" The prince shouted loudly.

Hearing this, the Knight Chief pushed the pedestal downwards so that the drill tool came into contact with the embryo.

When the tip of the drill bit came into contact with the embryo, a loud noise that even covered the sound of the steam engine could be heard.

As a lubricant they use lard, which is packed into drilling, out of the wire as black foam.

The witches were looking out of the wooden warehouse, and only Lightning insisted on staying.

To him, seeing this machine was much more beautiful than any sight. Please select a future comment system!