In addition to the photocopying function, the 3D printer itself also has the ability to store and edit drawings. Unfortunately, there are no more drawings in the drawing library except for the glasses, diamonds, elemental silicon and various medicines scanned before. It's really a printer at the beginning, and the drawings are all made up by yourself.

Fortunately, Gou has taught himself 3D modeling and has a certain understanding of part design. So after a lot of work, I finally had some reinforcing materials that could be used. Anyway, this thing only needs to be strong and rust-resistant, and it doesn't need to be too fine.

The auto repair factory selected by Gou Cao is located in a rural area in the north of the city, with a low land use rate. Therefore, although there were not many people in the hands of the previous owner, it covers an area of more than 200 square meters, and the overall shape is square.

To the south of the garage near the entrance is a repair shop covering an area of about 40 square meters. In the northwest part of the auto repair workshop is a habitable bungalow, covering an area of 30 square meters, with its own kitchen and bathroom equipment, but it has been demolished and replaced, and Gou Cao currently lives here. Then next to the living room is a two-story warehouse of more than 20 square meters per floor, and the lower floor is filled with various metal materials. The upper layer was intended to be used to store food and other household items. Then there is a vacant land of more than 100 square meters in the northeast corner of the auto repair factory, which was originally used to pile up sundries, and Gou Ke plans to reclaim it into farmland in the future.

The fence here was originally a single-story brick structure, which was not strong enough. As soon as Gou Ke bought the auto repair shop, he directly hired someone to tear down the original wall and rebuild the wall 20 centimeters thick and more than 3 meters high with cement. The original two entrances of the south gate and the east gate, when the new wall was built, only one entrance to the south gate was left for the convenience of defense. The entrance gate was changed from the original iron fence gate to an electrically controlled steel plate gate.

Due to the simplicity of the structure, the project was completed when the subspace storage equipment was rigorously tested. Previously, the rigorous testing work was done in the living room to the west of the building, so it was not visible to the construction crew.

Then there is the part of the renovation that cannot be done by outsiders.

First, a 30-centimeter-wide platform was erected around the wall at a height of 2 meters and 5 meters on the inside of the wall. In this way, Gou Ke can use the wall as cover to observe and shoot outside. Then, in the northeast corner of the wall, Gou Ke planned to build a 15-meter-high watchtower, but at the moment it was only possible to lay the foundation and repair the cement foundation more than a meter high. No matter how high the part is, you can only wait until the end of the world to cultivate, otherwise cultivating this kind of thing in peacetime will always cause suspicion.

Then there is the excavation of the basement. This part of the work went more smoothly than expected, because of the help of subspace storage devices.

That's right, it's a subspace storage device. Many things don't really need to be used in the way they were originally designed. The 88 gun was originally used to evacuate, but it turned out that it was actually quite useful for tanks; RPGs are used to fight tanks, but they are used to fight planes; Anti-aircraft machine guns are also good for hitting people when they are not air defense. And then the same goes for subspace storage devices.

The key to the excavation is the storage principle of the subspace storage device, which can take in any object in any state within half a meter, including earthworks. So you only need to control it to deposit it in the earth, and a big pit will appear in front of you, and even the shape of the pit is controllable. Gou Cao has read many novels before that there are similar storage devices, such as space rings or something, but none of them thought of this use, obviously many mazes and dungeons can be dug up with space rings to get out of trouble, it's like catching chickens.

The excavated earthwork is printed into high-strength tiles with a 3D printer, and then reinforced with metal fasteners, so that there are more than 30 square meters of space under the living room that can be used, which is solid and waterproof. More underground space can be built.

Four spherical tanks with a diameter of one meter were designed and manufactured by the printer to store the diesel. Then dig out a soundproof basement of about 20 square meters, buy five diesel generators and a small substation box, so that there is an independent power supply room.

In the gap between the tiles, soundproofing materials and metal fasteners needed to make the basement, Gou Cao did not let the 3D printer sit idle. By the time the construction of the underground oil storage room and power supply room was completed, a total of more than 60 square meters of solar panels were produced. Gou Cao laid them all on the roofs of the workshops and living rooms. So. Electricity doesn't have to worry about it. With the power supply, many things will be much easier.

The next step is the cultivation of the fields. First of all, you need to print a few reclamation tools with a printer...... Wait, what's going on with this extra drawing?

It appears to be a rather complex electronic device, able to distinguish between exposed transmission excuses and heat dissipation vents. After analyzing it, it shouldn't be dangerous, and Gou Cao vaguely felt that this thing should be very useful, coupled with the curiosity that kept him to death, Gou Cao decided to agree to this drawing. Considering the complexity of the device, it should take about five days to print this thing, so a few reclamation tools should be printed first, and then this unknown thing should be printed at the same time as the reclamation.

Five days later. A small farmland has been opened. The device was printed.

When the power is turned on, you can hear the sound of the machinery running, but it is only consuming power. It doesn't seem to be useful.

Is it really useless? There is a data interface on it, why don't you try it on a laptop? After much hesitation, Gou Ke still took it to the street. Twenty seconds later, a gentle electronic voice sounded:

"Hello, I'm Cortana."