My Post-Apocalyptic Shelter Levels Up Infinitely!

"Excellent quality! I actually relied on my own abilities to create excellent quality!"

Picking up the iron ax, Somo carefully looked at every knock mark on the axe. From top to bottom, Somo looked at it three times and still felt happy.

"From never getting started to getting started, it is indeed a qualitative leap!"

Taking out a unit of wood, Somo chopped it down gently, and with a bang, the wood broke.

It was like cutting through the water, without encountering any major resistance during the whole process.

There are such "productivity" tools, let alone axes produced on the assembly line on earth, even a chainsaw may not be so fast and efficient.

"Sure enough, other species have physical or fantasy advantages, but humans"

"The advantage of human beings is always a brain full of wisdom and imagination, and hands with well-made tools!"

"What fireball technique, technology! It's the most powerful weapon!"

Put the iron ax aside and return to the living room.

Sure enough, a new picture appeared on the TV, and based on the previous one, there was still a more standard way of building it.

After reading it quickly, Sumo gave up the idea of ​​continuing to study.

People should not be greedy for success.

The teaching just now was not comprehensive. If you rush to learn new techniques, it will be too easy to defeat the purpose, the foundation will be unstable, and it will be difficult to make progress in the end.

Returning the scene to the beginning, sitting on a stone bench to relax for a while, Somo started recording.

This time, it’s not tools that need to be made, but picric acid!

"Although the picric acid that was hastily made last time was upgraded to an excellent level due to the workbench, it did not have any attribute bonus. There should be something wrong with my steps and preparation method."

"But even so, it is powerful enough. What I need more now is stability. I must find a good way to detonate it safely!"

Looking at the picric acid manufacturing flow chart traded from the tundra shelter, Somo frowned and thought about how to prepare a bomb.

The reason why picric acid has been eliminated is because it is difficult to detonate and explodes at a moment's notice.

Whenever it touches an object and has a violent impact, the picric acid will explode immediately, without any armor-piercing ability.

Moreover, if you put too much of this thing, you will be within the explosion range. If you put too little of this thing, it will not have enough killing effect.

Of course, the best solution is to make mines, then lure the enemy up and use the mines to kill them.

"It's a pity. If I want to make landmines, my skills alone are not enough, and the raw materials are not good enough either!"

"It seems that the only way to deal with the current situation is with the most primitive explosive packs!"

After figuring out the idea, there is only one thing left to do - prepare a large amount of picric acid raw materials!

Just like grinding weapons and ammunition before fighting monsters in a farming game, Sumo patiently completed each step while sitting in front of the workbench.

From the preparation of sulfuric acid and nitric acid to phenol disulfonic acid!

Every step of the way, Sumo tried his best to do his best by repeatedly watching the teaching pictures on the TV!

Finally, the prepared nitric acid is passed into the phenol disulfonic acid, and after the nitration reaction is completed, fresh picric acid comes out!

This time, Sumo looked around again and finally showed a satisfied look.

[Picric Acid Explosive-Trinitrocresol (Excellent)]

Description: A powerful explosive made by entry-level craftsman "Suma". It is insoluble in carbon tetrachloride, slightly soluble in carbon disulfide, soluble in hot water, ethanol, ether, and easily soluble in acetone, benzene and other organic solvents. The preparation method strictly follows scientific concepts and therefore reaches the level of excellence.

Properties: melting point 8℃, boiling point: \u003e300℃ (explosion)

Special ability: Stability: In the process of completing the preparation, it is scientific and reasonable, which increases the stability of the explosive. It will never explode below 300 degrees)

Evaluation: Good order, everyone is happy! If you don’t order well, the whole village will eat!

"Although exploding crossbows require 300 degrees to explode, they are a thing of the past, but they are actually the most suitable for making explosive packs!"

Seeing that there was about a kilogram of picric acid explosives in front of him, Somo gently took a small basin and put all the picric acid crystals into it.

In the next half day, Sumo sat in front of the workbench and repeated this boring process tirelessly.

Every time when Somo wants to give up, he will feel inspired when he sees more and more yellow crystals piled in the corner!

Five kilograms of toluene, plus all the saltpeter snatched before, made a total of 30 kilograms of picric acid.

This translates into a full 60 kilograms of explosives!

With these weights, Sumo plans to make three 10-pound bags, five 3-pound bags, and 15 1-pound explosive bags.

The former is used to destroy enemy buildings, while the latter is used as a weapon at fixed points!

In daily movies, you can often see explosive packets bundled like quilts.

This kind of explosive package is called a group charge. It uses bulk powdered explosives, spreads it between cloth and paper, wraps it up like a package, and then ties it up horizontally and vertically with ropes.

Cut the moldy sheets that were used to store things into pieces, and tear off the notebook paper that was brought from the ruins.

After adding the picric acid according to the proportion, wrap it in cloth, and finally wrap it with transparent tape, the simple picric acid explosive bag is completed.

In the middle of the explosive bag, Somo put the black powder used to ignite the explosive bag and fixed it.

At this point, everything is ready, except for the final fuse to light it!

There are many types of fuzes, including trigger fuzes, proximity fuzes, weekly fuzes, time fuzes, command fuzes and multi-selection fuzes.

"Hehe, the manufacturing process of the fuze is very complicated and requires a lot of things, but"

"I have a system!"

When he thought of the system, Su Mo suddenly felt so happy. He laughed twice, concentrated his thoughts, and summoned the system interface.

Clicking to go to the creation interface, Sumo said softly:

"System, create the simplest trigger fuse, the cheapest one"

[The demand for creation is detected, the mine trigger fuse is retrieved, and 90 survival points are required]

"Landmine trigger fuse? What is it?" Seeing the system prompt, Sumo curiously clicked on the mine trigger fuse card.

A description was neatly written on the card:

The oldest landmine trigger fuse is powered by the gravity of falling rocks. The triggering mechanism consists of an iron needle, a rotating steel (iron) wheel, falling rocks, flint and a pulling rope.

When setting up, tie the two ends of the rope to the falling stone and the steel (iron) wheel respectively, set the rope into a trip wire, and then place the falling stone at a high place.

When people or animals trip on the rope, the falling stone will fall from a high place. When it falls, it will drive the steel wheel to rotate, rub against the flint and ignite, ignite the gunpowder fuse, and ignite the mine charge through the fuse.

"1560? Is this a trigger fuse from the sixteenth century?" After thinking about it carefully, Sumo gave up on this ancient triggering device.

Although this device is cheap, its practicality is very low, especially in the trigger success rate column, which is only 60%, which is extremely unstable.

"Retrieve the cheapest trigger fuze since the 19th century"

[The demand for creation was detected, the mechanical pressure fuse was retrieved, and the demand for creation points was 99 points]

"Okay! This is what I want!"

When he heard that the price of the pressure fuse was not as high as a bowl of mutton steamed buns and two meat buns, Sumo's eyes flashed and he exchanged five pressure fuses without hesitation.

495 survival points were deducted, a green light scattered out, and he began to paint on the workbench in front of him!

The green frame structure like 3D printing gradually began to take shape. After three to five seconds, five disk-shaped devices were slowly formed.

From this perspective, Sumo can clearly see the generation process of each component inside, as well as the principle and method of triggering.

Unfortunately, before Sumo could take a closer look and remember it, five discs fell onto the workbench with a loud bang.

Opening the card of the mechanical trigger fuse, Sumo memorized the complete usage method after looking at it for a while.

For this kind of triggering fuse, as long as the safety is opened and placed on the explosive bag, whenever someone steps on it, the detonator below will be triggered, thereby detonating the picric acid explosive bag.

At that time, all chasing enemies will clearly taste the power of "scientific" magic!

One pound of dynamite isn't enough? I'll give you ten pounds!

Any fireball technique or crowd advantage will become a joke due to the "fire phobia" of the Chinese people.

"System, how many survival points are needed to detonate the fuse in 10 minutes!"

[The demand for creation was detected, the time fuse (length 10 minutes) was retrieved, and the demand for creation points was 20 points]

"so cheap?"

Flipping through the card introduction, Sumo was shocked to find that the time fuse only requires 2 points per minute, and every minute it is extended, the requirement will increase by 2 points.

After thinking for a while, with a wave of his hand, Sumo directly exchanged 3 10-minute coins, 5 5-minute coins, and 15 3-minute coins.

A total of 200 survival points are spent.

What appears this time is very simple, like a string. It only needs to be ignited and it will slowly start to burn. When the time is up, ignite the black powder in the middle of the explosive bag.

boom!

Turning his head and looking at the darkening sky outside, Sumo made a boom mouth shape with his mouth!

“It won’t take long”

"Tomorrow morning, let the kobolds know what art is!"

Thank you to all the readers who voted for me monthly, la la la, I’m so happy to see my monthly votes!