The white and black repaid the favor, allowing Zhu Zilong to get a strange map. Pen, fun, and www.biquge.info

However, it seems that beyond that, there is not much to discover. Because of the resonance of the remnants of the Heavenly Dragon Holy Clothes in the Dragon Ball, it disappeared.

There is too little information available at present, and Zhu Zilong has no way to draw any conclusions from this.

However, he is not stupid, and he knows that he can't figure it out now, so he saves it first.

After putting the picture away in the Dragon Ball space, he took the white and black and returned to the island villa. He told the maid and his family that this was a pet he was going to adopt, and then he put white and black and settled on the island.

Considering how long he can stay in modern times, it is doubled.

So, he decided to plan D and investigate it in advance.

The so-called D plan refers to the plan of investing or acquiring products related to three-D printing in their own name, and then transferring a large number of them to the Ming Dynasty.

3D printing (3DP) is a type of rapid prototyping technology, which is a technology that uses adhesive materials such as powdered metal or plastic to construct objects based on digital model files by printing them layer by layer.

It is used to manufacture models in the fields of mold manufacturing and industrial design, and is gradually used in the direct manufacturing of some products.

The sci-fi blockbuster "Jurassic Park 3", which was released in 2001, brought "3D printing technology" to the screen for the first time. It was first invented by American inventor Charles Hull.

If you want to ask, why did Zhu Zilong put his mind on 3D printing.

In fact, it is very simple, because of the 3D printer, almost any product can be printed. Claimed to be omnipotent!

Of course, this is an exaggerated description, but it is truly powerful.

For example, more than 1,000 parts and components in passenger aircraft are manufactured using 3D printing technology.

You can also print home appliances and even food. Even houses can be typed!

For example, on September 22, 2016, someone used it to create a villa, and the entire process of building the house was controlled by a computer program. According to the design drawing, the 3D printer nozzle is used to spray high-density, high-performance concrete, and the walls, compartments, decorations, etc. are printed layer by layer, and then the basic structure of the whole house is completed with a robotic arm.

The cost per square meter of villas is 3,000-4,000 yuan, and now in 2023, it may cost 2,000 yuan per square meter.

Of course, it is even possible to print out the gun directly, (this is what Zhu Zilong cares about the most)!

In Western countries such as Europe and the United States, different from the special situation with China, 3D technology has already shown a blowout growth.

The scientific name of 3D printing is "additive manufacturing", which is just the opposite of "subtractive manufacturing", it is not a temporary new technology, in fact, it has been silently dedicated to the field of industrial manufacturing for nearly 30 years, is a kind of rapid prototyping technology, and is known as the core technology of the "third industrial revolution".

3D printing manufacturing technology has completely changed, and the way and principle of the traditional manufacturing industry is a subversion of the traditional manufacturing model.

As far back as 2018, a staggering 2.3 million units of three-D printing products were sold. After 4 years, the sales volume of the entire 3D printer is equivalent to a 1000% increase.

At this moment, inside one of the largest 3D companies in Greece.

Zhu Zilong couldn't take his eyes off how the several high-end 3D printers in front of him were shooting out various things, including guns.

"When I remember in 2015, I heard on the Internet that you could print out guns directly, but not in China. At that time, it seemed that it would take several hours to print a gun, but now it only takes half an hour to print a three-D gun! Zhu Zilong was very surprised.

The world's first 3D printed firearm, founded by DefenseDistr. 25-year-old University of Texas student Cody, Wilson made in 2012.

The 3D pistol can use standard pistol magazines and supports different caliber bullets.

Then, just the following year, another foreigner used a three-D printer to print the world's first three-D rifle. Like the AK-47, the firing operation is carried out by gas!

However, the rifle, named "", cracked after 140 test shots.

Compared to modern metal firearms, 140 shots is still a little fragile. But at the time, this was quite good for a rifle made of plastic.

In 2014, the American company Solidconcepts manufactured the world's first 3D printed metal pistol. More than 500 rounds were successfully fired, which is obviously much better than the previous 3D plastic version of the pistol. (Real people, real stories!) ）

Then in 2018, even machine guns and submachine guns can be printed out with a three-dimensional printer. And the performance is even better!

And now in 2023, hehe.

Let's put it this way, as long as you have a computer and a 3D printer. Click print, then walk away, just have the materials, and in half an hour you can make a semi-automatic gun out.

It may not be as good as real metal guns and military guns, but it is much stronger than hunting guns, earth guns, modified guns, and Ming Dynasty firearm guns.

This is not possible in China, but in the West, where people can carry guns, it is completely easy.

And this is also a point that Zhu Zilong also likes when he invests in Greece.

People who have never been to Western countries always think that it is easy to buy guns here casually, but in fact, strictly speaking, it is not too easy.

There are many procedures for individuals to buy a gun, and they are often reviewed, and if you are not careful, your gun license will be cancelled. It's just that you want to buy a large number of guns and leave like an arms dealer buying cabbage.

Really, it's not what you think.

Especially for Zhu Zilong, who still wants to keep a low profile, as well as maintain a sense of mystery and security, it is even more difficult, and it is not necessarily easy to do it if you have money.

So, he set his sights on the three-dimensional printing technology that can cross the river without concealment.

There are many such things here, and they can even be called people's livelihood industries. It's not as hassle as buying a gun!

Therefore, Zhu Zilong wanted to buy a batch of high-end 3D printers and go back, and then use diesel or manpower generators, all kinds of generators. In the Ming Dynasty military restricted area, a fixed program was carried out to start the printer, and the production of three-D guns was carried out 24 hours a day.

Imagine if there were a hundred, or hundreds, of these printers, working all together.

A hundred or hundreds of three-D guns are produced in batches in half an hour or an hour, how many are they in a day?

Hehe, as long as the supply of raw materials is on, in a few days, you can mass-produce tens of thousands of guns in minutes, and three-D modern guns will come out.

Even if it is the upgrading of the weapons of the 100,000 army, it will only take a month to print, plus a month of preparation time, and a month of raw material handling. Three or four months is enough!

It's scary to think about!

Moreover, the technology and model of the gun can also be updated and upgraded at any time.

With this divine object, it can simply make Zhu Zilong sweep across the entire Ming Dynasty time and space.

Well, of course, to talk about the shortcomings of the three-D gun.

There are also yes, for example.

First, the three-D gun is not a regular modern gun after all, if the effective attack distance of the regular pistol is more than 200 meters. Then the three-D pistol can only hit more than 100 meters at most.

Second, because of the material, it is more likely to blow up than modern regular guns, has a short service life, and needs to be replaced frequently.

Third, the requirements for raw materials are a little higher, only a little higher for the Ming Dynasty, so Zhu Zilong must pull raw materials from modern times.

Therefore, if you want to open on a large scale, it will definitely take more time than three months. In addition, it is also troublesome to often have to replace old guns with new ones!

- (To be continued.) )